myrg_info.c	merge+insert (alternate take)
myrg_extra.c	merge+insert (alternate take)
mymrgdef.h	merge+insert (alternate take)
sql_base.cc	open_table --> open_or_reset_table (needed for MERGE)


sql/sql_base.cc:
  open_table --> open_or_reset_table (needed for MERGE)
myisammrg/mymrgdef.h:
  merge+insert (alternate take)
myisammrg/myrg_extra.c:
  merge+insert (alternate take)
myisammrg/myrg_info.c:
  merge+insert (alternate take)
myisammrg/myrg_rrnd.c:
  merge+insert (alternate take)