in the grant tables case-insensitive and updating test results.


scripts/mysql_create_system_tables.sh:
  Fix collation of procs_priv.proc_priv
scripts/mysql_fix_privilege_tables.sql:
  Fix enum fields to have case-insensitive collation
mysql-test/r/information_schema.result:
  Update results
mysql-test/r/system_mysql_db.result:
  Update results
mysql-test/r/lowercase_table_grant.result:
  Update results