After merge fixes

Added more DBUG statements
Ensure that we are comparing end space with BINARY strings
Use 'any_db' instead of '' to mean any database. (For HANDLER command)
Only strip ' ' when comparing CHAR, not other space-like characters (like \t)

include/heap.h

@@ -51,7 +51,6 @@ typedef struct st_heapinfo		/* Struct from heap_info */
   uint reclength;			/* Length of one record */
   int errkey;
   ulonglong auto_increment;
-  my_bool implicit_emptied;
 } HEAPINFO;