doc/*.6: Break input lines at sentence endings

...pacifying a warning from the forthcoming groff 1.25.

Fixes:

troff:doc/dlb.6:159: warning: end of sentence detected before end of text line [-w style]
troff:doc/makedefs.6:53: warning: end of sentence detected before end of text line [-w style]
troff:doc/makedefs.6:55: warning: end of sentence detected before end of text line [-w style]
troff:doc/makedefs.6:58: warning: end of sentence detected before end of text line [-w style]
troff:doc/makedefs.6:153: warning: end of sentence detected before end of text line [-w style]
troff:doc/makedefs.6:159: warning: end of sentence detected before end of text line [-w style]
troff:doc/makedefs.6:166: warning: end of sentence detected before end of text line [-w style]
troff:doc/makedefs.6:222: warning: end of sentence detected before end of text line [-w style]
troff:doc/makedefs.6:245: warning: end of sentence detected before end of text line [-w style]
troff:doc/makedefs.6:279: warning: end of sentence detected before end of text line [-w style]
troff:doc/mnh.7:30: warning: end of sentence detected before end of text line [-w style]
troff:doc/nethack.6:225: warning: end of sentence detected before end of text line [-w style]
troff:doc/nethack.6:226: warning: end of sentence detected before end of text line [-w style]
troff:doc/nethack.6:230: warning: end of sentence detected before end of text line [-w style]
troff:doc/nethack.6:234: warning: end of sentence detected before end of text line [-w style]
troff:doc/nethack.6:236: warning: end of sentence detected before end of text line [-w style]
troff:doc/nethack.6:524: warning: end of sentence detected before end of text line [-w style]
troff:doc/nethack.6:577: warning: end of sentence detected before end of text line [-w style]
troff:doc/recover.6:155: warning: end of sentence detected before end of text line [-w style]

doc/dlb.6

@@ -159,4 +159,5 @@ examining the source is the only way to know which files can be.
 .ds co \(co
 .if !\n(.g .if n .ds co (C)\" in principle, should be just "c"
 This file is Copyright \*(co \*(Na, \*(Nd for version \*(Nb:\*(Nr.
-NetHack may be freely redistributed.  See license for details.
+NetHack may be freely redistributed.
+See license for details.

doc/makedefs.6

@@ -50,14 +50,18 @@ makedefs \- NetHack miscellaneous build-time functions
 .B Makedefs
 is a build-time tool used for a variety of
 .BR NetHack (6)
-source file creation and modification tasks.  For historical reasons,
+source file creation and modification tasks.
+For historical reasons,
 .B makedefs
-takes two types of command lines.  When invoked with a short option, the
-files operated on are determined when
+takes two types of command lines.
+When invoked with a short option,
+the files operated on are determined when
 .B makedefs
-is compiled.  When invoked with a long option, the
+is compiled.
+When invoked with a long option,
+the
 .B --input
-and 
+and
 .B --output
 options are used to specify the files for the
 .BI -- command.
@@ -150,20 +154,23 @@ Show debugging output.
 .br
 .TP
 .B --make \fR[\fIcommand\fR]
-Execute a short command.  Command is given without preceding dash.
-.br
+Execute a short command.
+.I Command
+is given without preceding dash.
 .TP
 .BI --input " file"
 Specify the input
 .I file
-for the command (if needed).  If the file is - standard
+for the command (if needed).
+If the file is - standard
 input is read.
 .br
 .TP
 .BI --output " file"
 Specify the output
 .I file
-for the command (if needed).  If the file is - standard
+for the command (if needed).
+If the file is - standard
 output is written.
 .br
 .TP
@@ -219,7 +226,8 @@ command (and certain other commands) filter their input, on a line-by-line
 basis, according to control lines embedded in the input and on information
 gleaned from the
 .BR NetHack (6)
-configuration.  This allows certain changes such as embedding platform-specific
+configuration.
+This allows certain changes such as embedding platform-specific
 documentation into the master documentation files.
 .P
 Rules:
@@ -242,7 +250,8 @@ Conditionals may be nested.
 will exit with an error code if any errors are detected; processing will
 continue (if it can) to allow as many errors as possible to be detected.
 .IP - 4
-Unknown identifiers are treated as both TRUE and as an error.  Note that
+Unknown identifiers are treated as both TRUE and as an error.
+Note that
 .BR --undef " or " #undef
 in the
 .BR NetHack (6)
@@ -279,4 +288,5 @@ The NetHack Development Team
 .ds co \(co
 .if !\n(.g .if n .ds co (C)\" in principle, should be just "c"
 This file is Copyright \*(co \*(Na, \*(Nd for version \*(Nb:\*(Nr.
-NetHack may be freely redistributed.  See license for details.
+NetHack may be freely redistributed.
+See license for details.

doc/mnh.7

@@ -27,7 +27,8 @@ and
 .IR troff (1)
 macro definitions extends
 .IR tmac.n (7)
-for the NetHack Guidebook.  This document should be
+for the NetHack Guidebook.
+This document should be
 read as an addendum to the documentation for
 .IR tmac.n .
 .PP

doc/nethack.6

@@ -222,18 +222,23 @@ Conversely, you must use the appropriate player name to restore a saved game.
 A
 .I playername
 suffix can be used to specify the profession, race, alignment and/or gender
-of the character.  The full syntax of the playername that includes a
-suffix is "name-ppp-rrr-aaa-ggg".  "ppp" are at least the first three letters
+of the character.
+The full syntax of the playername that includes a
+suffix is "name-ppp-rrr-aaa-ggg".
+"ppp" are at least the first three letters
 of the profession (this can also be specified using a separate
 .B \-p
 .I profession
-option).  "rrr" are at least the first three letters of the character's
+option).
+"rrr" are at least the first three letters of the character's
 race (this can also be specified using a separate
 .B \-r
 .I race
-option).  "aaa" are at least the first three letters of the character's
+option).
+"aaa" are at least the first three letters of the character's
 alignment, and "ggg" are at least the first three letters of the
-character's gender.  Any of the parts of the suffix may be left out.
+character's gender.
+Any of the parts of the suffix may be left out.
 .PP
 .B \-p
 .I profession
@@ -521,7 +526,8 @@ save/	A subdirectory containing saved games.
 .\"following line should contain <backslash><space><tab>
 \ 	
 .br
-sysconf	System-wide options.  Required if
+sysconf	System-wide options.
+Required if
 .br
 \ 	program is built with 'SYSCF' option
 .br
@@ -577,6 +583,7 @@ Probably infinite.
 .ds co \(co
 .if !\n(.g .if n .ds co (C)\" in principle, should be just "c"
 This file is Copyright \*(co \*(Na, \*(Nd for version \*(Nb:\*(Nr.
-NetHack may be freely redistributed.  See license for details.
+NetHack may be freely redistributed.
+See license for details.
 .PP
 Dungeons & Dragons is a Trademark of Wizards of the Coast, Inc.

doc/recover.6

@@ -155,4 +155,5 @@ avoid conflicts.
 .ds co \(co
 .if !\n(.g .if n .ds co (C)\" in principle, should be just "c"
 This file is Copyright \*(co \*(Na, \*(Nd for version \*(Nb:\*(Nr.
-NetHack may be freely redistributed.  See license for details.
+NetHack may be freely redistributed.
+See license for details.