WL#4203 Reorganize and fix the data dictionary tests of

testsuite funcs_1
1. Fix the following bugs
   Bug#30440 "datadict" tests (all engines) fail: Character sets depend on configuration
      Solution: Test variants charset_collation_* adjusted to different builds
   Bug#32603 "datadict" tests (all engines) fail in "community" tree: "PROFILING" table
      Solution: Excluding "PROFILING" table from queries
   Bug#33654 "slow log" is missing a line
      Solution: Unify the content of the fields TABLES.TABLE_ROWS and
                STATISTICS.CARDINALITY within result sets
   Bug#34532 Some funcs_1 tests do not clean up at end of testing
      Solution: DROP objects/reset global server variables modified during testing
                + let tests missing implementation end before loading of tables
   Bug#31421 funcs_1: ndb__datadict fails, discrepancy between scripts and expected results
      Solution: Cut <engine>__datadict tests into smaller tests + generate new results.
   Bug#33599 INFORMATION_SCHEMA.STATISTICS got a new column INDEX_COMMENT: tests fail (2)
      Generation of new results during post merge fix
   Bug#33600 CHARACTER_OCTET_LENGTH is now CHARACTER_MAXIMUM_LENGTH * 4
      Generation of new results during post merge fix
   Bug#33631 Platform-specific replace of CHARACTER_MAXIMUM_LENGTH broken by 4-byte encoding
      Generation of new results during post merge fix
      + removal of platform-specific replace routine (no more needed)
2. Restructure the tests
   - Test not more than one INFORMATION_SCHEMA view per testscript
   - Separate tests of I_S view layout+functionality from content related to the
     all time existing databases "information_schema", "mysql" and "test"
   - Avoid storage engine related variants of tests which are not sensible to
     storage engines at all.
3. Reimplement or add some subtests + cleanup
   There is a some probability that even the reviewed changeset
   - does not fix all bugs from above   or
   - contains new bugs which show up on some platforms <> Linux or on one of
     the various build types
4. The changeset contains fixes according to
   - one code review
   - minor bugs within testing code found after code review (accepted by reviewer)
   - problems found during tests with 5.0.56 in build environment

mysql-test/suite/funcs_1/datadict/statistics.inc

@@ -0,0 +1,55 @@
+# suite/funcs_1/datadict/statistics.inc
+#
+# Auxiliary script to be sourced by
+#    is_statistics_is
+#    is_statistics_mysql
+#    is_statistics_<engine>
+#
+# Purpose:
+#    Check the content of information_schema.statistics about tables within the
+#    database '$database'.
+#
+# Usage:
+#    The variable $database has to be set before sourcing this script.
+#    Example:
+#       let $database = db_data;
+#
+# Author:
+# 2008-01-23 mleich WL#4203 Reorganize and fix the data dictionary tests of
+#                           testsuite funcs_1
+#                   Create this script based on older scripts and new code.
+#
+
+--source suite/funcs_1/datadict/datadict.pre
+
+--disable_warnings
+DROP DATABASE IF EXISTS db_datadict;
+--enable_warnings
+CREATE DATABASE db_datadict;
+
+# Create a low privileged user.
+# Note: The database db_datadict is just a "home" for the low privileged user
+#       and not in the focus of testing.
+--error 0,ER_CANNOT_USER
+DROP   USER testuser1@localhost;
+CREATE USER testuser1@localhost;
+GRANT SELECT ON db_datadict.* TO testuser1@localhost;
+
+let $my_select = SELECT * FROM information_schema.statistics
+$my_where
+ORDER BY table_schema, table_name, index_name, seq_in_index, column_name;
+--replace_column 10 #CARD#
+eval $my_select;
+
+--echo # Establish connection testuser1 (user=testuser1)
+--replace_result $MASTER_MYPORT MYSQL_PORT $MASTER_MYSOCK MYSQL_SOCK
+connect (testuser1,localhost,testuser1,,db_datadict);
+--replace_column 10 #CARD#
+eval $my_select;
+
+--echo # Switch to connection default and close connection testuser1
+connection default;
+disconnect testuser1;
+DROP USER testuser1@localhost;
+DROP DATABASE db_datadict;
+