Alloc ops params

Use sha256 for config hash to be FIPS compliant and make Theano cache more forward compatible

Fix missing scipy and warn that Theano will have a c++ compiler mandatory

[CRASH] Crash fix when we don't do scan(..., profile=True)

Convert the docstrings to comments in compile/tests

sync attribute added to theano function

Remove config.gpuarray.sync from Theano code.

Fix gh-6268. Crash fix when we don't do scan(..., profile=True), but we do theano.function(..., profile=True)

This reverts commit e62e923b.

We force the recompilation in this PR already. So keep the code base simpler.

Add in the keys the props of the nodes. To make the keys forward compatible in case we add new attribute, but forget to bump the c_code_cache_version number.

Tweak the dnn config again to cover more cases.

Fix magma-related inplace tests that fail in DEBUG_MODE

Some comments were referring to the use of md5 hash instead of sha256 hash. Will need to review at a later date for changing function names and string usage with 'md5' as these are now a misnomer. 

usedforsecurity is only for forked openssl implementation which i cannot used

Added usedforsecurity=False for hashlib.md5()

Fix magma-related inplace tests that fail in DEBUG_MODE: http://earlgrey.iro.umontreal.ca:8080/job/Theano_buildbot/45/testReport/