Honor CC/CFLAGS/INCDIRS/LIBDIRS supplied by the ports framework and
drop the pkg-config generated makefile fragment; the dbus include and
library paths are passed on the command line instead.

Index: xfile-xdgsvc/Makefile
--- xfile-xdgsvc/Makefile.orig
+++ xfile-xdgsvc/Makefile
@@ -3,9 +3,9 @@
 CFLAGS += -O2 $(INCDIRS)
 
 xfile-xdgsvc: xfile-xdg.o
-	$(CC) -o $@ xfile-xdg.o -ldbus-1
+	$(CC) $(LIBDIRS) -o $@ xfile-xdg.o -ldbus-1
 
 clean:
 	-rm *.o
 	-rm xfile-xdgsvc
 	-rm pkgconf.mf
@@ -12,8 +12,3 @@
 
 install:
 	@echo "See README for installation instructions"
-
-pkgconf.mf:
-	echo "INCDIRS=$$(pkg-config --cflags dbus-1)" >> pkgconf.mf
-
-include pkgconf.mf
