gobject-introspection and MinGW

[Earnie <earnie users sourceforge net>]

I'm building gobject-introspection-1.30.0 with MSYS and MinGW.  I'm to
the point of the GISCAN GLib-2.0.gir and it reports "No mscvr71.dll
loaded."  I'm using the python.org provided Windows distribution version
2.7.  I had to modify the hack in giscanner/utils.py at line 101 to
replace('.libs\\.libs', '.libs') to get this far, as well as set
environment variables.  Any hints on how to get past the reported error?

TIA,
Earnie