A question about this:
Shedskin results always #includes pcre.h and -lgc . Does this mean we should
propagate both or is it expected that the user knows about those or should we
patch the Shedskin Makefile generator so that it references specific inputs?
If the latter, see shedskin/makefile.py which uses (distutils)
sysconfig.get_config_var('LIBS') and sysconfig.get_config_var('SYSLIBS') and
others.
Those are probably Python's compilation flags. Should we extend those or rather
patch shedskin/makefile.py to also get them from somewhere else?
