Merge branch 'sp_sandbox'
Merge https://github.com/Theano/Theano
Fix words tacked on the end of a sentence.
Fix use of wrong macro.
Add first version of MRG for gpuarray (with tests).
Change GPUA_mrg over to use GpuKernelBase.  (I couldn't get it to work otherwise).
Remove useless import of NVCC_compiler
Added usecases for scan tutorial
Merge branch 'master' of git://github.com/Theano/Theano into scan
CRASH: Make sure we don't bust the threads.z 64 limites.
Make sure dtype is int64 as before and comment code that isn't used.
More info in error message.
Don't print waiting for the lock the first time.
CRASH FIX: same fix crash to the new gpu back-end
remove import not used.
Merge git://github.com/Theano/Theano
Merge pull request #1761 from nouiz/mixed

Mixed
initial commit for fast DotModulo
fix overflow bug in matVecModM
faster dotmodulo