[MRG] Fix crash when specifing march in cxxflags.

GpuEye compyte

Use a ternary op since it seems the cuda compiler cannot resolve overloads by going through simple typedefs.

Cleanup

Convert GpuEye to be a real compyte op.  This is, where possible, a direct translation of the original code and does not reflect the preferred style.

Fix numpy.memmap TensorConstant tests in python 3.3

fix crash in python 2.4 due to missing import

Skip another test when no c++ compiler and no scipy.

Also update the NEWS_DEV.txt

Make tensor.{constant,as_tensor_variable} work with memmap.

close gh-1610

Fix the tolerance in a test

New fix grad scan

Better error message for theano.tensor.{all,any}({True,False})

fix gh-1615

Crash fixes