Update waf and waf-tools
diff --git a/waf-tools/protoc.py b/waf-tools/protoc.py
new file mode 100644
index 0000000..f9d871f
--- /dev/null
+++ b/waf-tools/protoc.py
@@ -0,0 +1,47 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Philipp Bender, 2012
+# Matt Clarkson, 2012
+
+from waflib.Task import Task
+from waflib.TaskGen import extension 
+
+"""
+A simple tool to integrate protocol buffers into your build system.
+
+    def configure(conf):
+        conf.load('compiler_cxx cxx protoc')
+
+    def build(bld):
+        bld(
+                features = 'cxx cxxprogram'
+                source   = 'main.cpp file1.proto proto/file2.proto', 
+                includes = '. proto',
+                target   = 'executable') 
+
+"""
+
+class protoc(Task):
+	run_str = '${PROTOC} ${PROTOC_FLAGS} ${PROTOC_ST:INCPATHS} ${SRC[0].abspath()}'
+	color   = 'BLUE'
+	ext_out = ['.h', 'pb.cc']
+
+@extension('.proto')
+def process_protoc(self, node):
+	cpp_node = node.change_ext('.pb.cc')
+	hpp_node = node.change_ext('.pb.h')
+	self.create_task('protoc', node, [cpp_node, hpp_node])
+	self.source.append(cpp_node)
+
+	if 'cxx' in self.features and not self.env.PROTOC_FLAGS:
+		self.env.PROTOC_FLAGS = '--cpp_out=%s' % node.parent.get_bld().abspath()
+
+	use = getattr(self, 'use', '')
+	if not 'PROTOBUF' in use:
+		self.use = self.to_list(use) + ['PROTOBUF']
+
+def configure(conf):
+	conf.check_cfg(package="protobuf", uselib_store="PROTOBUF", args=['--cflags', '--libs'])
+	conf.find_program('protoc', var='PROTOC')
+	conf.env.PROTOC_ST = '-I%s'
+