Change the ModuleCache to only take the lock for actual compilation.

Also, once we acquire the lock do a refresh of the cache and try to pick up modules compiled by others.

Change the ModuleCache to only take the lock for actual compilation.
753ad528 · Arnaud Bergeron · 34a15a3f · 753ad528
--- a/theano/gof/cmodule.py
+++ b/theano/gof/cmodule.py