Fix crash issue with runPluginCommand

menuName is NULL when called from runPluginCommand
Need to get some test coverage on the MenuManager from C++ level
Add stub for menu manager tests
Menu Manager tests for findMenuCommand and findPluginCommand
Version 1.0.3.0
Add test for abs()

Issue with #define in Python for _hypot
Libs update - newly built after pyconfig.h change
Version 1.0.4