Fix for Antony's push. I've also changed from using the zlib off_t pointer type to my_off_t to fix issues around buggy zlib versions and to make sure file sizes are consistent through out mysql.



mysql-test/r/information_schema.result:
  Fix for Antony adding plugins to information schema.
sql/ha_archive.cc:
  Fix for now using my_off_t, no need to worry about buggy zlib's anymore.
sql/ha_archive.h:
  Update to fix issues with buggy zlib.
storage/archive/azio.c:
  Moved to using my_off_t (which should fix problems with most fille system size issues).
storage/archive/azlib.h:
  Change to using my_off_t