add module building script.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@627 bbd45198-f89e-11dd-88c7-29a3b14d5316

components/SConscript

@@ -0,0 +1,10 @@
+# for module compile 
+Import('env')
+Import('rtconfig')
+
+# build each components
+
+# build each modules
+SConscript('hello/SConscript')
+SConscript('thread/SConscript')
+