Manual merge from 5.0.19 to 5.1, affecting only the problem of bug#16144

ChangeSet@1.2053.37.11, 2006-03-04 23:04:48+03:00, konstantin@mysql.com
Null-merge as instructed there!


libmysql/libmysql.c:
  Null-merged from 5.0.19 to 5.1, as instructed in
  ChangeSet@1.2053.37.11, 2006-03-04 23:04:48+03:00, konstantin@mysql.com
tests/mysql_client_test.c:
  Null-merging from 5.0.19 to 5.1, as instructed in
  ChangeSet@1.2053.37.11, 2006-03-04 23:04:48+03:00, konstantin@mysql.com