curses options and status groundwork

More groundwork for overhauling the status display for curses, plus
a few functional changes.  It was doing a full status update for
every changed field (except conditions), instead of waiting for a
flush directive after gathering multiple changes at a time.  Since
it already does gather every change, the fix to wait is trivial.

This decouples 'hitpointbar' from 'statushilites'.  When highlighting
is off, it uses inverse video only.  When on, it behaves as before:
using inverse video plus the most recent color used to highlight HP
(which can vary if that has rules to highlight changes or percentage
thresholds) but ignoring any HP attribute(s).  This also enables the
latent 'statuslines' option and changes 'windowborders' option from
being settable at startup only to changeable during play.

'statuslines' can have a value of 2 (the default) or 3 and applies to
'align_status:bottom' or 'top'; it's ignored for 'left' and 'right'.
At the moment, setting it to 3 only allows status condition overflow
to wrap from the end of line to 2 to the beginning of line 3, and if
window borders are drawn they'll clobber the last character on line 2
and first one on line 3.  There's no point in trying to fix that
because it will go away when the main status overhaul changes go in.
Condition wrapping for vertical orientation (left or right placement)
was already subject to the same phenomenon and will be superseded too.

This also changes the meaning of the 'windowborders' value so could
impact players using source from git (or possibly beta binaries for
Windows, but not for OSX where curses interface wasn't included).
Old:
 0 = unspecified, 1 = On, 2 = Off, 3 = Auto (On if display is big
     enough, Off otherwise; reevaluated after dynamic resizing);
 Unspecified got changed to 3 during curses windowing initialization.
New:
 0 = Off, 1 = On, 2 = Auto;
 0 gets changed to 2 for default value at start of options processing.
So old value of 2 is changing meaning and explicit old value of 3 is
becoming invalid.  Implicit 3 changes to default 2.  Explicit 3 could
be the subject of a fixup but there isn't much point since 2 can't
have a similar fix.  Users who are using old 2 or explicit 3 will need
to update their run-time config files.

This adds 'statuslines' to the Guidebook and moves some other recently
added documentation of curses options from among the general options
(section 9.4) to "Window Port Customization options" (section 9.5).
None of them have been added to dat/opthelp which seems to be missing
all the wincap options.

Originally I made a lot of changes (mostly moving C99 declarations to
start of their blocks) to the old '#if 0' code at end of cursstat.c,
but have tossed those, except for one subtle bug that assumed 'int'
and 'long' are the same size.

doc/Guidebook.tex

@@ -45,7 +45,7 @@
 %.au
 \author{Original version - Eric S. Raymond\\
 (Edited and expanded for 3.6 by Mike Stephenson and others)}
-\date{February 27, 2019}
+\date{March 19, 2019}
 
 \maketitle
 
@@ -3305,11 +3305,6 @@ or {\tt U} (known to be uncursed, when `off', the default).
 Gold is never blessed or cursed, but it is not described as ``uncursed''
 even when the {\it implicit\verb+_+uncursed\/} option is `off'.
 %.lp
-\item[\ib{guicolor}]
-Use color text and/or highlighting attributes when displaying some
-non-map data (such as menu selector letters).
-Curses interface only; default is on.
-%.lp
 \item[\ib{help}]
 If more information is available for an object looked at
 with the `{\tt /}' command, ask if you want to see it (default on).
@@ -3614,6 +3609,7 @@ such as ``{\it par\-a\-noid\verb+_+con\-fir\-ma\-tion:attack~pray~Remove}''.
 If true, always display your current inventory in a window.  This only
 makes sense for windowing system interfaces that implement this feature.
 %.lp
+%.\" petattr is a wincap option but we'll document it here...
 \item[\ib{petattr}]
 Specifies one or more text highlighting attributes to use when showing
 pets on the map.
@@ -3642,7 +3638,7 @@ Currently multiple highlight-style letters can be combined by simply
 stringing them together (for example, ``bk''), but in the future
 they might require being separated by plus signs (such as ``b\verb&+&k'',
 which works already).
-When using the `N' choice, it should be specified on its own,
+When using the `n' choice, it should be specified on its own,
 not in combination with any of the other letters.
 
 %.lp
@@ -3754,8 +3750,8 @@ depend upon the window port used or on the type of terminal.  Persistent.
 Prevent you from (knowingly) attacking your pets (default on).  Persistent.
 %+.lp
 \item[\ib{sanity\verb+_+check}]
-+Evaluate monsters, objects, and map prior to each turn (default off).
-+Debug mode only.
+Evaluate monsters, objects, and map prior to each turn (default off).
+Debug mode only.
 %.lp
 \item[\ib{scores}]
 Control what parts of the score list you are shown at the end (for example,
@@ -3823,15 +3819,6 @@ This option may be used to select one of the named symbol sets found within
 {\tt symbols} to alter the symbols displayed on the screen.
 Use ``{\tt symset:default}'' to explicitly select the default symbols.
 %.lp
-\item[\ib{term\verb+_+cols}\ \ {\it and}]"
-%.lp
-\item[\ib{term\verb+_+rows}]
-Curses interface only.
-Number of columns and rows to use for the display.
-Curses will attempt to resize to the values specified but will settle
-for smaller sizes if they are too big.
-Default is the current window size.
-%.lp
 \item[\ib{time}]
 Show the elapsed game time in turns on bottom line (default off).  Persistent.
 %.lp
@@ -3923,30 +3910,19 @@ meta-digit keys to fast-move, instead of moving 8 units at a time,
 move by skipping the same glyphs.
 (default off)
 %.lp
-\item[\ib{windowborders}]
-Whether to draw boxes around the map, status area, message area, and
-persistent inventory window if enabled.
-Curses interface only.
-Acceptable values are
-
-%.sd
-%.si
-{\tt 1} --- on, always show borders\\
-{\tt 2} --- off, never show borders\\
-{\tt 3} --- auto, on if terminal or window is at least
-(24\verb&+&2)x(80\verb&+&2)\ \ (default)\\
-%.ei
-%.ed
-
-%.lp ""
-(The 26x82 size threshold for `3' refers to number of rows and
-columns of the display.)
-%.lp
 \item[\ib{windowtype}]
 When the program has been built to support multiple interfaces,
 select whichone to use, such as ``{\tt tty}'' or ``{\tt X11}''
 (default depends on build-time settings; use ``{\tt \#version}'' to check).
 Cannot be set with the `{\tt O}' command.
+
+%.lp ""
+When used, it should be the first option set since its value might
+enable or disable the availability of various other options.
+For multiple lines in a configuration file, that would be the first
+non-comment line.
+For a comma-separated list in NETHACKOPTIONS or an OPTIONS line in a
+configuration file, that would be the {\it rightmost\/} option in the list.
 %.lp
 \item[\ib{wizweight}]
 Augment object descriptions with their objects' weight (default off).
@@ -4031,6 +4007,11 @@ If {\it NetHack\/} can, it should use this size font for text windows.
 \item[\ib{fullscreen}]
 If {\it NetHack\/} can, it should try and display on the entire screen rather than in a window.
 %.lp
+\item[\ib{guicolor}]
+Use color text and/or highlighting attributes when displaying some
+non-map data (such as menu selector letters).
+Curses interface only; default is on.
+%.lp
 \item[\ib{large\verb+_+font}]
 If {\it NetHack\/} can, it should use a large font.
 %.lp
@@ -4063,10 +4044,26 @@ If {\it NetHack\/} can, it should display a menu of existing saved games for the
 choose from at game startup, if it can. Not all ports support this option.
 %.lp
 \item[\ib{softkeyboard}]
-If {\it NetHack\/} can, it should display an onscreen keyboard.  Handhelds are most likely to support this option.
+If {\it NetHack\/} can, it should display an onscreen keyboard.
+Handhelds are most likely to support this option.
 %.lp
 \item[\ib{splash\verb+_+screen}]
-If {\it NetHack\/} can, it should display an opening splash screen when it starts up (default yes).
+If {\it NetHack\/} can, it should display an opening splash screen when
+it starts up (default yes).
+%.lp
+\item[\ib{statuslines}]
+Number of lines for traditional below-the-map status display.
+Acceptable values are 2 and 3 (default is 2).
+Curses interface only.
+%.lp
+\item[\ib{term\verb+_+cols}\ \ {\it and}]"
+%.lp
+\item[\ib{term\verb+_+rows}]
+Curses interface only.
+Number of columns and rows to use for the display.
+Curses will attempt to resize to the values specified but will settle
+for smaller sizes if they are too big.
+Default is the current window size.
 %.lp
 \item[\ib{tiled\verb+_+map}]
 If {\it NetHack\/} can, it should display a tiled map if it can.
@@ -4090,6 +4087,28 @@ If {\it NetHack\/} can, it should display inverse when the game specifies it.
 If {\it NetHack\/} can, it should display this number of messages at a time
 in the message window.
 %.lp
+\item[\ib{windowborders}]
+Whether to draw boxes around the map, status area, message area, and
+persistent inventory window if enabled.
+Curses interface only.
+Acceptable values are
+
+%.sd
+%.si
+{\tt 0} --- off, never show borders\\
+{\tt 1} --- on, always show borders\\
+{\tt 2} --- auto, on display is at least
+(\verb&24+2&)x(\verb&80+2&)\ \ (default)\\
+%.ei
+%.ed
+
+%.lp "
+(The 26x82 size threshold for `2' refers to number of rows and
+columns of the display.
+A width of at least 110 columns (\verb&80+2+26+2&) is needed for
+{\it align_status\/}
+set to {tt left} or {\tt right}.)
+%.lp
 \item[\ib{windowcolors}]
 If {\it NetHack\/} can, it should display windows with the specified
 foreground/background colors. Windows GUI only. The format is