Increase the maximum number of user menu entries from 400 to 1000

diff -ur nedit_official/source/userCmds.c nedit_mod/source/userCmds.c
--- nedit_official/source/userCmds.c	2005-01-31 15:34:24.000000000 +0100
+++ nedit_mod/source/userCmds.c	2006-07-18 12:47:41.137430400 +0200
@@ -87,7 +87,7 @@
 
 /* max. number of user programmable menu commands allowed per each of the
    macro, shell, and background menus */
-#define MAX_ITEMS_PER_MENU 400
+#define MAX_ITEMS_PER_MENU 1000
 
 /* indicates, that an unknown (i.e. not existing) language mode
    is bound to an user menu item */