Hmm, I don't remember committing this, but apparently I did. It's not needed
now that I have libjson-glib behaving within the normal build environment.
#
# Makefile.mingw
#
# Description: Makefile for win32 (mingw) purple plugin pack
#
PIDGIN_TREE_TOP?=../../..
include $(PIDGIN_TREE_TOP)/libpurple/win32/global.mak