Ticket 50310 - fix sasl header include
Bug Description: After the merge of the PKG_CONFIG change, on SUSE
the server fails to build. This is because the pkg-config for
sasl on suse doesn't add the -I include for sasl to the path so
using sasl.h doesn't work.
Fix Description: Change all references to sasl/sasl.h
Author: William Brown <email@example.com>
Review by: hmc, mreynolds (thanks!)