- Refactoring of duplicate code
- Modified bad test cases
- Changed expected error when operating on information_schema.


mysql-test/r/information_schema.result:
  - updated result file with new error code.
mysql-test/r/rpl_sp.result:
  - Modified test case
mysql-test/t/information_schema.test:
  - Changed error code for operations on information_schema
mysql-test/t/rpl_sp.test:
  - Modified test case
sql/sql_parse.cc:
  - Cleaned up code:
    * replace tab with space
    * simplified if/switch statements
    * refactored duplicated code