- Added special option/variable prefix '--loose-' to my_getopt.c


client/mysql.cc:
  Fixed some variable types.
client/mysqladmin.c:
  Fixed some variable types.
client/mysqlcheck.c:
  Fixed some variable types.
client/mysqldump.c:
  Fixed some variable types.
client/mysqlimport.c:
  Fixed some variable types.
client/mysqlshow.c:
  Fixed some variable types.
myisam/myisamchk.c:
  Fixed some variable types.
mysys/my_getopt.c:
  Fixed a bug in noticing whether argument was allowed to option (variable).
  Added support for prefix --loose-option-name
  This will work with options and variables, but not with --set-variable (!)
  --set-variable is depricated and --variable-name=value should be used
  instead. When used, my_getopt will not return error if option/variable
  was not found, but print a warning, do a no-op and continue.
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted