WINCHAIN - a framework allowing multiple processors between core and winport

This is the code I built trying to figure out the large window size issue.
It completely compiles out if not needed (see -DWINCHAIN in hints/macos10.7)
and except for one call during setup has zero overhead if compiled in and
not used.  See window.doc for more info.

Defs for UNUSED parms.  I know this has been controversial, so use is isolated
to the chain code and windows.c (where it shouldn't be intrusive and saves about
50 warnings).

Hints file for 10.7, but the build process still needs to be migrated from
the branch.

win/tty/wintty.c

@@ -15,6 +15,12 @@
 #include <stdio.h>
 
 #include "hack.h"
+
+/* Support for logging SIGWINCH. */
+#ifdef WINCHAIN
+# include "winprocs.h"
+#endif
+
 #include "dlb.h"
 #include "date.h"
 #ifdef SHORT_FILENAMES
@@ -247,7 +253,24 @@ winch()
     int oldLI = LI, oldCO = CO, i;
     register struct WinDesc *cw;
 
+# ifdef WINCHAIN
+    {
+#  define WINCH_MESSAGE "(SIGWINCH)"
+if(wc_tracelogf)
+	(void)write(fileno(wc_tracelogf), WINCH_MESSAGE, strlen(WINCH_MESSAGE));
+#  undef WINCH_MESSAGE
+    }
+# endif
     getwindowsz();
+		/* For long running events such as multi-page menus and
+		 * display_file(), we note the signal's occurance and
+		 * hope the code there decides to handle the situation
+		 * and reset the flag. There will be race conditions
+		 * when handling this - code handlers so it doesn't matter.
+		 */
+# ifdef notyet
+    winch_seen = TRUE;
+# endif
     if((oldLI != LI || oldCO != CO) && ttyDisplay) {
 	ttyDisplay->rows = LI;
 	ttyDisplay->cols = CO;
@@ -1805,10 +1828,6 @@ tty_display_nhwindow(window, blocking)
     case NHW_MENU:
 	cw->active = 1;
 #ifdef H2344_BROKEN
-/* XXX this is the block that messes up corner win for player selection
-   (at least when undoing the patch one piece at a time from the start
-   of the file)
-*/
 	cw->offx = (cw->type==NHW_TEXT)
 		? 0
 		: min( min(82,ttyDisplay->cols/2), ttyDisplay->cols - cw->maxcol - 1);
@@ -2356,6 +2375,9 @@ boolean complain;
 	    terminate(EXIT_FAILURE);
 	}
 	(void) close(fd);
+# ifdef notyet
+	winch_seen = 0;
+# endif
     }
 #else	/* DEF_PAGER */
     {
@@ -2517,6 +2539,7 @@ tty_end_menu(window, prompt)
 	tty_add_menu(window, NO_GLYPH, &any, 0, 0, ATR_NONE, prompt, MENU_UNSELECTED);
     }
 
+	/* XXX another magic number? 52 */
     lmax = min(52, (int)ttyDisplay->rows - 1);		/* # lines per page */
     cw->npages = (cw->nitems + (lmax - 1)) / lmax;	/* # of pages */