CHANGE_COLOR palette option adjustments

It was too early to call the windowport change_color() routine
while processing the config file. The windowport was not yet
fully operational.

Now the palette option processing will just place the rgb
value into the appropriate ga.altpalette[CLR_MAX] entry.

init_sound_disp_gamewindows(void) [allmain.c] calls
change_palette() [coloratt.c] and it will call the windowport
change_color() function for each ga.altpalette[] entry that
has been set.

Notes:
The rgb values stored in ga.altpalette[] have the NH_ALTPALETTE bit set
so that the rgb value of 0 can be stored and be distinguishable from
a "not set" entry.

The NH_ALTPALETTE bit is cleared from the rgb value in change_palette()
prior to calling the windowport change_color() function.

The syntax for palette is colorname/r-g-b.
For example: palette:black/12-12-12

colorname must be one of the NH_BASIC_COLOR names or a suitable
alias for one of those 16 entries.

Some of the windowport CHANGE_COLOR functions had the wrong parameters,
perhaps due to bitrot. Those have been corrected to match the prototype.

include/optlist.h

@@ -534,14 +534,14 @@ static int optfn_##a(int, int, boolean, char *, char *);
                 No, Yes, No, No, NoAlias,
                 "the inventory order of the items in your pack")
 #ifdef CHANGE_COLOR
-#ifndef WIN32
+#ifndef MAC     /* not old Mac OS9 */
+    NHOPTC(palette, Advanced, 15, opt_in, set_gameview,
+                No, Yes, No, No, "hicolor",
+                "palette (adjust an RGB color in palette (color/R-G-B)")
+#else
     NHOPTC(palette, Advanced, 15, opt_in, set_in_game,
                 No, Yes, No, No, "hicolor",
                 "palette (00c/880/-fff is blue/yellow/reverse white)")
-#else
-    NHOPTC(palette, Advanced, 15, opt_in, set_in_config,
-                No, Yes, No, No, "hicolor",
-                "palette (adjust an RGB color in palette (color-R-G-B)")
 #endif
 #endif
     /* prior to paranoid_confirmation, 'prayconfirm' was a distinct option */