STM32L1 support, rebased onto upstream generalizations branch.

Working example again.

lib/stm32/l1/Makefile

@@ -25,34 +25,12 @@ CC		= $(PREFIX)-gcc
 AR		= $(PREFIX)-ar
 CFLAGS		= -Os -g -Wall -Wextra -I../../../include -fno-common \
 		  -mcpu=cortex-m3 -mthumb -Wstrict-prototypes \
-		  -ffunction-sections -fdata-sections -MD -DSTM32L1
+		  -ffunction-sections -fdata-sections -MD -DSTM32F1
 # ARFLAGS	= rcsv
 ARFLAGS		= rcs
-OBJS		= vector.o desig.o crc.o gpio.o rcc.o
+OBJS		= rcc.o gpio.o desig.o crc.o
 
-VPATH += ../../usb:../
+VPATH += ../../usb:../:../../cm3
 
-# Be silent per default, but 'make V=1' will show all compiler calls.
-ifneq ($(V),1)
-Q := @
-endif
-
-all: $(LIBNAME).a
-
-$(LIBNAME).a: $(OBJS)
-	@printf "  AR      $(subst $(shell pwd)/,,$(@))\n"
-	$(Q)$(AR) $(ARFLAGS) $@ $^
-
-%.o: %.c
-	@printf "  CC      $(subst $(shell pwd)/,,$(@))\n"
-	$(Q)$(CC) $(CFLAGS) -o $@ -c $<
-
-clean:
-	@printf "  CLEAN   lib/stm32/f1\n"
-	$(Q)rm -f *.o *.d
-	$(Q)rm -f $(LIBNAME).a
-
-.PHONY: clean
-
--include $(OBJS:.o=.d)
+include ../../Makefile.include