attribute check timer (trunk only)

Move the counter for the next attribute check to the context
structure.

This increments patchlevel so previous save and bones
files are unuseable after applying.

src/restore.c

@@ -678,7 +678,6 @@ register int fd;
 	inven_inuse(FALSE);
 
 	load_qtlist();	/* re-load the quest text info */
-	reset_attribute_clock();
 	/* Set up the vision internals, after levl[] data is loaded */
 	/* but before docrt().					    */
 	vision_reset();