Add method to query free send buffer size

into mysql.com:/home/jonas/src/mysql-4.1

  adopt to changes in auto*tools

into sinisa.nasamreza.org:/mnt/work/mysql-4.1

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

into zim.(none):/home/brian/mysql/mysql-4.1

into sinisa.nasamreza.org:/mnt/work/mysql-4.1

into ua141d10.elisa.omakaista.fi:/home/my/bk/mysql-4.1

into mysql.com:/home/jonas/src/mysql-4.1

  run ndb_select_all --no-defaults

into mdk10.(none):/home/reggie/bk/41test2

into xiphis.org:/usr/home/antony/work2/p3-bug7241.5

  Only acquire necessary write lock for multi-delete

fixups of test case and comment formatting

This final cset is to fix a syntax problem in ha_myisammrg.cc where a / was left out of a format string.
It also adds a check in has_path to avoid a possible redundant comparison.

ha_myisammrg.cc:
  Replaced missing / in format string
my_getwd.c:
  Added test to see if FN_LIBCHAR != '/' before doing comparison to avoid redundant comparison

into mdk10.(none):/home/reggie/bk/mysql-4.1

This cset is to roll out the cset applied earlier from Ingo.
This bug has been fixed with a different cset.

This is a replacement for the original patch given by Ingo.  This one comes
from Monty.
The problem is that merge files now use unix style pathnames on all 
platforms.  The merge file open code was not properly converting those
pathnames back to non-unix when necessary.

This is a second patch needing another review.  The first patch didn't solve
the entire problem.  open and fopen on Windows will still open
files like "com1.sym" when they shouldn't.  This patch
checks that the file exists before trying to open it.

The problem was that on Windows the access method indicates that access to file 
such as "com1" and "lpt1" is allowed (since they are device names) and
this causes mysql to attempt to open them as databases or tables.

The fix was to write our own my_access method that uses other Win32 functions
to determine if the given argument is indeed a file and has to requested
mode.

into mysql.com:/usr/home/ram/work/mysql-4.1

This patch was submitted by Ingo and it appears to work correctly.

sql_udf.cc:
  changed dl_name to udf->dl in mysql_create_function

into mysql.com:/usr/home/ram/work/mysql-4.1