Add separate settings for library vs. classpath JARs.
Add separate settings for library vs. classpath JARs.

Library JARs are scanned, and their classes wrapped as C++ proxies,
whereas classpath JARs are added to the classpath but not wrapped.

With these changes, cppwrap can now successfully wrap projects with
dependencies.



uw-loci/jar2lib,uw-loci/jar2lib,uw-loci/jar2lib,uw-loci/jar2lib