updates to make win32 building work again

mingw-Makefile.conf

@@ -2,28 +2,8 @@
 # copy this file to Makefile.conf
 # edit the paths in here
 
-# how to call the mingw tools
-MINGW_EXEC_PREFIX = 
+# how to get pkg-config
+PKGCONFIG = $(RADIANT_DEPENDENCIES_PREFIX)/gtk/bin/pkg-config.exe
 
-# where the dependencies package is extracted
-RADIANT_DEPENDENCIES_PREFIX = /c/mingw/radiant-deps-mingw32/
-
-# run the prefix fixing tool
-IGNORETHIS := $(shell cd $(RADIANT_DEPENDENCIES_PREFIX) && ./fixprefix.sh)
-
-# set the environment for make
-OS = Win32
-CFLAGS +=
-CXXFLAGS +=
-CPPFLAGS += -I$(RADIANT_DEPENDENCIES_PREFIX)/radiantdeps/include
-LDFLAGS += -L$(RADIANT_DEPENDENCIES_PREFIX)/radiantdeps/lib
-PKG_CONFIG_PATH := $(RADIANT_DEPENDENCIES_PREFIX)/gtk/lib/pkgconfig:$(RADIANT_DEPENDENCIES_PREFIX)/radiantdeps/lib/pkgconfig:$(PKG_CONFIG_PATH)
-WHICHDLL = $(RADIANT_DEPENDENCIES_PREFIX)/whichdll.sh
-
-CC = $(MINGW_EXEC_PREFIX)gcc
-CXX = $(MINGW_EXEC_PREFIX)g++
-LDD =
-RANLIB = $(MINGW_EXEC_PREFIX)ranlib
-AR = $(MINGW_EXEC_PREFIX)ar
-WINDRES = $(MINGW_EXEC_PREFIX)windres
-PKGCONFIG = $(RADIANT_DEPENDENCIES_PREFIX)/gtk/bin/pkg-config
+# use mingw32
+include mingw-Makefile.inc