Code review comment for lp://staging/~hrvojem/percona-pam-for-mysql/bug901242

Sorry to have forgotten to mention this in the previous comment:

We need to explain what it means "the default client plugin dir setting does not work". I.e. the user gets error message from bug 901242 on trying to log in:

BUT when try to log in with user created with 'IDENTIFIED WITH auth_pam_server' i get error:
ERROR 2059 (HY000): Authentication plugin 'auth_pam' cannot be loaded: /usr/local/Percona-Server-5.5.17-rel22.1-197.Linux.x86_64/lib/plugin/auth_pam.so: cannot open shared object file: No such file or directory