use GetCurrentDir() as include path

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1576 bbd45198-f89e-11dd-88c7-29a3b14d5316

bsp/lm3s9b9x/SConscript

@@ -13,7 +13,7 @@ if GetDepend('RT_USING_LWIP'):
 	src_drv += ['luminaryif.c']
 
 src	= File(src_bsp + src_drv)
-CPPPATH = [RTT_ROOT + '/bsp/lm3s9b9x']
+CPPPATH = [GetCurrentDir()]
 group = DefineGroup('Startup', src, depend = [''], CPPPATH = CPPPATH)
 
 Return('group')