Portability fixes

After merge fixes
Portability fixes

Fixed some wrong column specifications in mysql_fix_privilege_tables

Removed \r from new tests
Fixes to get new sustem_mysql_db... tests to work

into mysql.com:/home/my/mysql-4.0

into gluh.mysql.r18.ru:/home/gluh/mysql-4.1.clear

UCS2 now has its own my_like_range function.

into mysql.com:/space/my/mysql-4.1-build

   not work as expected) - need to investigate (after 4.1.2 is released)

I am fixing it here in 4.1, not in 4.0, as it goes with another change
which I did in 4.1 (fix for BUG#3204
""mysqlbinlog --read-from-remote-server this_binlog.001" prints all binlogs").

into mysql.com:/home/mysql_src/mysql-4.1

we now detect that the server is sending us a log which we did not request
by testing the info in the fake Rotate event.
I also changed code to not print the fake Rotate which describes the
log we asked for (it's always the first received event but old masters
may not send it).

into mysql.com:/home/my/mysql-4.1

  Update an obsolete comment about trx commit: we can no longer call trx_undo_update_cleanup_by_discard(), and actually, the idea to call it was erroneous, it cannot work

into mysql.com:/home/my/mysql-4.1

Changed _XXX to _MY_XXX to solve conflict problem on Mac OS X

into mysql.com:/space/my/mysql-4.1

   instead of calling them directly (WL#1521) - this also fixed a compile
   error with libtool-1.5.2 on FreeBSD (error: tag name "CXX" already 
   exists)

into gluh.mysql.r18.ru:/home/gluh/mysql-4.1.clear

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

  Remove includes of sys/types.h and sys/stat.h because these are already included through univ.i

Portability fixes

  Add a comment that InnoDB always retrieves the row id, if the clustered index was internally generated by InnoDB. Then we know the 'ref' to the row.

into teton.kitebird.com:/home/paul/mysql-4.1

  Fix Bug #1942: do not retrieve all columns in a table if we only need the 'ref' of the row (usually, the PRIMARY KEY) to calculate an ORDER BY

into teton.kitebird.com:/home/paul/mysql-4.1

client library:
- implemented 'check_license' function

into eagle.mysql.r18.ru:/home/vva/work/BUG_2874/mysql-4.0