Bug #37024: Wrong location of messagefiles

make_binary_distribution.sh got clobbered by the 5.0 version during a merge.
This caused a few packaging problems, including message files put in the wrong
place and some missing files.  Fix is just to revert back to the 5.1 version
from before the merge.

Problem introduced in
ChangeSet 1.2606.2.1 2008/05/13 15:56:07 kent@kent-amd64.(none)

This change was made in the 5.1.25 release clone in BK, but never made it to the main mysql-5.1 BK tree.  I am adding it to mysql-5.1 bzr.