However some hacks were used while waiting for new FRM file


sql/field.h:
  Added function to set Field charset
sql/filesort.cc:
  Temporarily workaround, It seems charset should be passed in argument
sql/ha_heap.cc:
  Set correct key charset from Field information
sql/table.cc:
  Dirty hack to distinguish columns charsets while waiting for Monty to rewrite FRM file
sql/table.h:
  New field: table default character set