Compile fixes for binutils-gold and gcc-4.6 support

Compile fixes for binutils-gold and gcc-4.6 support

These two tools are much stricter about dependency linkages. We have already
had to drop testAuth due to major dependency loops they dislike.
This makes the remainder of the dependency changes needed.

Also adds:
 - tests/STUB.h with macros for simpler stub file creation
 - stub_libmgr.cc for unit-test stub replacment of mgr/libmgr.la library.
   many API functions commented out, but sufficient for the current needs.