* utils/hbmk2/hbmk2.prg
+ added experimental -ldflag+=, -dflag+= cmdline options
and ldflags+= .hbc option. Such flags will be added after
libs, which may be useful in some situations, f.e. pkg-config
% only enclose libnames and paths inside single-quotes if
they contain any non-ascii, non-digig, non-., non-/ chars
! fixed .hbx generation on darwin