Version 4.2.3
Added vendor Sonus.
Updated osplibversion.h and RELNOTES.txt to prepare 4.1.9.
Version 4.1.8
Sync with trunk to r674.
Updated osplibversion.h and RELNOTES.txt to prepare 4.2.3.
Merged branch 4.2 changes r667:673 into trunk.
Version 4.2.2
Updated RELNOTES.txt for release 4.2.2.