Additional fix related to #49. The gnuc99 extension should also be en…

…abled when building from the c source to fix the build on Mountain Lion.

setup.py

@@ -84,5 +84,6 @@
       ext_modules=[Extension("func", sources=["bottleneck/src/func/func.c"],
                              include_dirs=[np.get_include()]),
                    Extension("move", sources=["bottleneck/src/move/move.c"],
+                             extra_compile_args=["-std=gnu89"],
                              include_dirs=[np.get_include()])]
       )