Add a 'purple.h' that includes the defines and other header files required
to compile against libpurple. Thanks to John 'rekkanoryo' Bailey for the
nice description. This should get rid of all the G_GNUC_NULL_TERMINATED
compile errors many people keep getting.
Closes #2524.
#
# Makefile.mingw
#
# Description: Makefile for win32 (mingw) version
#
PIDGIN_TREE_TOP:=..
include $(PIDGIN_TREE_TOP)/libpurple/win32/global.mak