common.pxd, ready for when we have more than one .pyx file. Fiddle with
the rest.
--HG--
extra : convert_revision : svn%3Aeff31bef-be4a-0410-a8fe-e47997df2690/trunk%40110
Use of ESOffset sorted out a bit more -- I think it now makes sense.
And since I can't find any way for doctest to "see" C stdout/stderr,
just make rundoctest.py output an explanatory message (and the RED/GREEN
thing just makes it a bit quicker to ignore worrying texts).
--HG--
extra : convert_revision : svn%3Aeff31bef-be4a-0410-a8fe-e47997df2690/trunk%4046