Add first example project (framework) using libopenstm32.

This is intended as a small blink example for the Olimex STM32-H103 board.
It doesn't do anything useful (yet), but it builds fine.

There's a sample Makefile and a preliminary ld script (which probably
needs some more work).

example/Makefile

@@ -0,0 +1,42 @@
+##
+## This file is part of the libopenstm32 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+##
+
+BINARY		= blink
+
+# PREFIX	?= arm-none-eabi
+PREFIX		?= arm-elf
+CC		= $(PREFIX)-gcc
+LD		= $(PREFIX)-ld
+CFLAGS		= -Os -g -Wall -Wextra -I../include -fno-common \
+		  -mcpu=cortex-m3 -mthumb
+LDFLAGS		= -L../lib -T$(BINARY).ld -nostartfiles
+OBJS		= $(BINARY).o
+
+all: $(BINARY)
+
+$(BINARY): $(OBJS) $(BINARY).ld
+	$(LD) $(LDFLAGS) -o $(BINARY) $(OBJS) -lopenstm32
+
+$(BINARY).o: $(BINARY).c
+	$(CC) $(CFLAGS) -c $(BINARY).c
+
+clean:
+	rm -f *.o $(BINARY)
+