* utils/hbmk2/hbmk2.prg
* Changed to not give fatal error if cmdline (or .hbp)
didn't contain any sources. Just warn. Required for hbqt.hbp,
which is a holder project without own output.
; NOTE: BTW HBQT fails very badly on any dynamic lib creating
attempt, and the reason is that it's still a monolithic
lib under the surface, just split some files into separate
libs to avoid cmdline length.