cassi	CMF assist library	Originally for NSE but currently only a stub
comobj	common object library	In former times, the only library used by SCCS
mpwlib	libPW			Former "Programmers Workbench" from AT&T UNIX
sccs	SCCS high level library	Schily SCCS high level code

When linked together as shared library, the code from all these libraries will
be in libsccs.
