column with timestamp values with BETWEEN clause

 - Do-compile: fix small (cosmetical, not critical) typo

into mysql.com:/home/nick/mysql/mysql-3.23

  Include univ.i before any system headers to remove a large file compilation failure on AIX

into mysql.com:/space/my/mysql-3.23

   necessary (required to actually pass the sql-bench without aborting
   with "table space full")

   -p option for cp and the -r option for scp (thank to Paul DuBois for
   the patch)
 - fixed a typo

  Fix typo in earlier commit

  Fix bug: range estimator exaggerated small range size greatly if the paths in the B-tree happened to branch on a high level

into mysql.com:/space/my/mysql-3.23

create_tmp_table fails.

WHERE column_name = key_column_name was calculated as true
for NULL values.

Allocate HEAP blocks in smaller blocks to get better memory utilization and more speed when used with safemalloc.
Don't initalize memory areas when run with --skip-safemalloc.

 - bumped up version number to 3.23.54 in configure.in
 - replaced Docs/LICENSE with Docs/MySQLEULA.txt and modified
   scripts/make_binary_distribution.sh and Build-tools/mysql-copyright*
   accordingly.

GROUP BY ... ORDER BY queries.

  Fix compilation error on HP-UX-11: pthread_t is a scalar there, not a struct like in HP-UX-10.20