devel/glib12 and devel/glib20

[Gary Palmer]

Hi,

I upgraded to pkgng recently, and prior to this I had both devel/glib12 
and devel/glib20 happily co-existing.  Now I am told that I can't
have both installed at the same time.  This was fine with both
glib-2.36.3_3 and glib-1.2.10_13 until this last updated to glib-2.36.3_4
which svn log shows as "Change PYTHON_FEATURES to USE_PYTHON"

Is this correct?  Can I only have one or the other now?

Thanks,

Gary