deciced to use it even before bootstrap.

"LOAD DATA INFILE" with various command line and CHARACTER SET
clause options.

export with SELECT INTO OUTFILE followed by
import with LOAD DATA INFILE, with various command line
--default-character-set=xxx and "CHARACTER SET xxx" clause
combinations.

- Moving the new my_charlen()-based code handling multi-byte characters
  from READ_INFO::field_field() to a new method READ_INFO::read_mbtail()
- Reusing read_mbtail() in READ_INFO::read_value(), instead of the old
  my_mbcharlen()-based code which did not catch broken byte sequences

- Removed some QQ markers
- Removed some rows not compatible with valgrind 3.9.0
- Made mysql_install_db.sh more silent by default. --verbose now gives more information
- Added assert that auto-increment doesn't generate 0 (safety)
- Removed thd->set_time() in some places as it's set in init_for_queries()
- Fixed some --big tests in tokudb
- Fixed a bug in mysql_client_test.cc where sql_mode was not properly reset

This is done by splitting variables.errmsg and locale.errmsg to
variables.errmsg_extra and locale.errmsg_extra

The ER() macros in unireg.h now looks more complex than before, but this
isn't critical as most usage of them are with constants and the compiler
will remove most of the test code.

The new class is used for:
- FIELDS TERMINATED BY 'string'
- LINES STARTING BY 'string'
- LINES TERMINATED BY 'string'

The implementation of "FIELDS ENCLOSED BY 'char'" and "FIELDS ESCAPED BY 'char'"
should eventually also switch to this class to support multi-byte characters.
Currently multi-byte ENCLOSED and ESCAPED characters are rejected at parse time.

buff, buff_length, end_of_buff. This unifies "LOAD DATA" and "LOAD XML", so
they now both use String for a temporary value storage.
This change will make further work for MDEV-6353 easier.

MDEV-9824 LOAD DATA does not work with multi-byte strings in LINES TERMINATED BY when IGNORE is specified

- Removing the "diff_if_only_endspace_difference" argument from
  MY_COLLATION_HANDLER::strnncollsp(), my_strnncollsp_simple(),
  as well as in the function template MY_FUNCTION_NAME(strnncollsp)
  in strcoll.ic

- Removing the "diff_if_only_space_different" from ha_compare_text(),
  hp_rec_key_cmp().

- Adding a new function my_strnncollsp_padspace_bin() and reusing
  it instead of duplicate code pieces in my_strnncollsp_8bit_bin(),
  my_strnncollsp_latin1_de(), my_strnncollsp_tis620(),
  my_strnncollsp_utf8_cs().

- Adding more tests for better coverage of the trailing space handling.

- Removing the unused definition of HA_END_SPACE_ARE_EQUAL

man page updates: mysqlbinlog options, mysqlcheck clarification and 10.2 updates

as it can return negative values.
The typo was introduced in the patch for MDEV-9665 in 10.2.0.

as they are not used any more.
We now use function templates from strcoll.ic instead.

Fixed calculating pointer to memory allocated for names in numeric format in unpacking procedure.

this fixes 40 failures in mysql-test

Added --thread_cache_size=0 to some tests that was depending on not having
a thread cache.

Added --thread_cache_size=0 to slow_launch_time_func.test as otherwise
the new thread would start too fast to be counted as a slow_launch_thread.

between gbk_chinese_ci and big5_chinese_ci.