Squashed commit of the following:

    apps/graphics/twm4nx:  Clean up some build issues.

    apps/graphics/nxglyphs:  Remove some warnings due to coupling with NXWM.

    apps/graphics/twmndx:  Separate out the main() entry point for ctwm4nx.cxx.  There is functionality there that does not involve CTwm4Nx and so it is better if the main function were totally separate.
42 files changed