Try to separate globals needed by libstp and globals needed by the
stp executable. This turned out to be quite difficult because the
current design is horrific (see FIXMEs added)!

It has been necessary to disable the 'h' flag to vc_setFlag() and
vc_setFlags() to do this. This doesn't really matter because
vc_setFlag() and vc_setFlags() NEED TO BE REMOVED!