KiCad module build and xtal-4 cleanup.

- modules/Makefile: generate .mod files from .fpd
- components/xtal-4.lib: changed symbol name inside the .lib file as well
- modules/xtal-4.fpd: added package dimensions measurements

modules/Makefile

@@ -0,0 +1,13 @@
+MODULES=meander mini-usb stdpass xtal-4
+
+.SUFFIXES:	.fpd .mod
+.PHONY:		all clean
+
+all:		$(MODULES:%=%.mod)
+
+clean:
+		rm -f *~*.fpd
+		rm -f $(MODULES:%=%.mod)
+
+.fpd.mod:
+		fped -k $< $@