Added vendor Taqua.
Merged branch 4.2 changes r656:662 into trunk.
Updated osplibversion.h and RELNOTES.txt to prepare 4.2.2.
Updated osplibversion.h and RELNOTES.txt to prepare 4.1.7.
Version 4.2.1
Updated RELNOTES.txt for release 4.2.1.
Version 4.1.6
Updated RELNOTES.txt for release 4.1.6.