added $bindir to the search list, fixes bug #1158036
Automerge lp:~abychko/percona-server/ps-5.1-1158036
Fix for bug #1266980 crash in group_concat ported from MySQL 5.5.
Test case.
Automerge lp:~sergei.glushchenko/percona-server/5.1-ps-bug1266980