sql/parse_file.cc:
  Fix after discussion/review with Sanja: removed rename_view from sql_view to general function rename_in_schema_file
  (so it can be used for other .frm types like triggers too)
sql/parse_file.h:
  added prototype for rename_in_schema_file
sql/sql_rename.cc:
  simplified code (thanks to Sanja)
sql/sql_view.cc:
  moved rename_view_files to rename_in_schema_file (parse_file.cc)
  corrected MYF parameter from MY_WME to 0.