python2: Pass configureFlags to modules as well.

Fixes regression from 086e801d

.

The switch tu UCS-4 only happened for the main Python interpreter and
libraries, but the extension modules were using the same source but
without any configureFlags, so the extensions still referred to UCS-2
symbols.

Tested module builds of Python 2.7 and all modules except crypto fail.
Also tested against sqlite3 module of Python 2.6, although for other
modules there still seems to be an unrelated build failure with Tcl/Tk
libraries, so we might need to fix that later.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>