BLD: don't build cppsandbox ext for now b/c setupegg.py doesn't like it

Author: wesm

setup.py

@@ -314,7 +314,7 @@ def srcpath(name=None, suffix='.pyx', subdir='src'):
 extensions = [tseries_ext, engines_ext, sparse_ext]
 
 if not ISRELEASED:
-    extensions.extend([sandbox_ext, cppsandbox_ext])
+    extensions.extend([sandbox_ext])
 
 # if _have_setuptools:
 #     setuptools_args["test_suite"] = "nose.collector"