graw_xlib: build fixes

src/gallium/targets/graw-xlib/SConscript

@@ -20,6 +20,7 @@ env.Prepend(LIBS = [
 
 env.Append(CPPPATH = [
     '#src/gallium/drivers',
+    '#src/gallium/include/state_tracker',
 ])
 
 
@@ -28,6 +29,8 @@ sources = [
     'graw_util.c',
 ]
 
+env.Tool('x11')
+
 if True:
     env.Append(CPPDEFINES = 'GALLIUM_SOFTPIPE')
     env.Prepend(LIBS = [softpipe])