Fixed error when mysql_unix_port pointed to const string (not uncommon on windows)

proper handling of SUM() in some functions.

Fixed handling of lower_case_table_names in SHOW TABLE STATUS, mysql_list_fields() and mysql_table_dump().
This fixes some Errcode 13 errors on Windows when deleting tables.

into mysql.com:/space/my/mysql-4.0-build

into mysql.com:/home/walrus/bk/40

  restore nake_time and make_time_r

made bisone 1.75 compatible code

   operator)

  Cleanup of the previous bug fix: replace code is either SQLCOM_REPLACE or SQLCOM_REPLACE_SELECT

  Fix a bug REPLACE INTO t SELECT ... did not work if t has an auto-inc column

into mysql.com:/home/pz/mysql/mysql-4.0-root

(On Windows --log-error is enabled by default)

Asked by Heikki and Peter.

into serg.mysql.com:/usr/home/serg/Abk/mysql-4.0

Fix for bug when using auto_increment column and LAST_INSERT_ID()

Call pthread_mutex_destroy() on not used mutex.
Changed comments in .h and .c files from // -> /* */
Added detection of mutex on which one didn't call pthread_mutex_destroy()
Fixed bug in create_tmp_field() which causes a memory overrun in queries that uses "ORDER BY constant_expression"
Added optimisation for ORDER BY NULL

into serg.mysql.com:/usr/home/serg/Abk/mysql-4.0

and VERSION() to be uppercase in e.g. "select pi()"

  Backport from 4.0: Fix a major bug in InnoDB query estimator for queries of type SELECT ... WHERE col < x and SELECT ... WHERE col > x; MySQL could pick a table scan though the result set was only a few rows in a big table

  Fix a major bug in InnoDB query estimator for queries of type SELECT ... WHERE col < x and SELECT ... WHERE col > x; MySQL could pick a table scan though the result set was only a few rows in a big table

 - CFLAGS and CXXFLAGS should honor RPM_OPT_FLAGS

   now maintained in a separate "mysqldoc" BK source tree) - it will be
   replaced with the correct manual.texi when building the official
   source distribution
 - fixed automake error about reservedwords.texi by moving it to EXTRA_DIST
   instead

   so it's part of the distribution (manual.texi includes this file)
   It will be replaced with the correct one from the mysqldoc tree before
   building the distribution
 - removed generation and inclusion of MIRRORS file, since the mirror list
   is no longer part of manual.texi anyway
 - replaced YFLAGS with AM_YFLAGS in sql/Makefile.am to make automake happy
 - Redirect standard error when checking for dpkg-architecture in ltconfig
   to avoid error message showing during configuration