githib pull request #232 - curses symset

This time I'm putting things in as-is before making a few tweaks.

The pull request was three or four separate changes.  I used the
patch instead so they've been collected into one commit.

src/drawing.c

@@ -543,6 +543,7 @@ boolean name_too;
     /* initialize restriction bits */
     symset[which_set].primary = 0;
     symset[which_set].rogue = 0;
+    symset[which_set].fallback = TRUE;
 
     if (name_too) {
         if (symset[which_set].name)