Add new js file in extra dist.

Makefile.am

@@ -819,6 +819,7 @@ js_EXTRA_DIST=                              \
   js/binary/decoder.js                      \
   js/binary/decoder_test.js                 \
   js/binary/encoder.js                      \
+  js/binary/message_test.js                 \
   js/binary/proto_test.js                   \
   js/binary/reader.js                       \
   js/binary/reader_test.js                  \

python/setup.py

@@ -191,10 +191,10 @@ if __name__ == '__main__':
       extra_compile_args.append('-Wno-shorten-64-to-32')
 
     v, _, _ = platform.mac_ver()
-    if not v:
+    if v:
       v = float('.'.join(v.split('.')[:2]))
       if v >= 10.12:
-        extra_compile_args=['-std=c++11'],
+        extra_compile_args.append('-std=c++11')
 
     if warnings_as_errors in sys.argv:
       extra_compile_args.append('-Werror')