[oe] cyrus-sasl2: Clean up QA issues

[Joe MacDonald]

This resolves the situation for my builds and is based on a fix we did in a
previous tree I worked on.

Marcin:  Would you be able to confirm for me that this doesn't break anything
of yours?  I'm using this for building cyrus-sasl to support building OpenLDAP
myself, but I'd like to know it doesn't break anything of yours, since you
indicated you were using the current, RPATH-messy, version as a build
dependency.

-- 
-Joe.
:wq