Update scons build for new code layout.
diff --git a/src/SConscript b/src/SConscript
new file mode 100644
index 0000000..5b09943
--- /dev/null
+++ b/src/SConscript
@@ -0,0 +1,7 @@
+Import('*')
+
+SConscript([
+	'gallium/SConscript',
+	'mesa/SConscript',
+	'gallium/winsys/SConscript',
+])