- removed some unreferenced variables
 - fixed the libmysql project file by removing a duplicate file reference (merge error)


sql/item_func.cc:
  - removed unused variable "Field" from Item_func_sp::sp_result_field
sql/sql_select.cc:
  - removed unreferenced variable "filename" from create_tmp_table
sql/unireg.cc:
  - removed unused variable "firstpos" from make_empty_rec
VC++Files/libmysql/libmysql.dsp:
  - after-merge fix: removed duplicate file ctype-cp932.c