* utils/hbmk2/hbmk2.prg
+ Added -xhp=<xMate .xhp file> option which will attempt to
read xMate project file and save it as .hbp file.
This is experimental and I'd like to ask xMate users to
update/extend this converter code as I'm not xMate user.
Moreover the only .xhp file sample I have is pretty slim,
limited, so it may easily be possible that some features
are not imported or imported wrongly.