py-theano: File permissions set incorrectly for egg-info

[cdeil (Christoph Deil)]

The file permissions in the egg-info folder for py27-theano are set incorrectly (read is forbidden, but should be allowed):

$ ls -lh /opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Theano-0.6.0-py2.7.egg-info
total 192
-rw-r-----  1 root  wheel    67K Dec  7 20:59 PKG-INFO
-rw-r-----  1 root  wheel    15K Dec  7 20:59 SOURCES.txt
-rw-r-----  1 root  wheel     1B Dec  7 20:59 dependency_links.txt
-rw-r-----  1 root  wheel    25B Dec  7 20:59 requires.txt
-rw-r-----  1 root  wheel     7B Dec  7 20:59 top_level.txt

This causes installation of some other ports (py27-pyregion in my case) to fail.

I've run into the same issue with py-dateutil : #43187