Update windows doc code.

Fix syntax.

Fix some typos.

Remove unnecessary blocks: `Microsoft Visual C++ Compiler for Python 2.7` and `Configure CUDA and libgpuarray after installation`.

Update Windows documentation following the plan in https://gist.github.com/notoraptor/ec67e03e7bb311b836e0e351a41b4505

Some other files have been also updated:
 * Add a |CompilerName| replacement rule to `requirements.inc` which is `gcc` for Windows/Linux and `Clang` for Mac.
 * Update inclusion rule of `requirements.inc` everywhere it is included to take account of the new replacement rule.
 * Update `install_generic.inc`. The libgpuarray stable version is now set to `v0.6.0`. I have also updated the download instructions because the actual instructions does not work on my Windows machine.

Some other updates and corrections to come (eespecially, how to configure libgpuarray on windows).

Remove useless warning when the profile was manually disabled

IO_toposort

Remove useless warning when the profile was manually disabled for one function. Theano does this automatically in some cases.

Scan compile/grad speed up

Ccw c message

dnn.enabled=no_check

Add pathed version of theano_logo_allblue.svg

Fix some DebugMode problems

Remove useless graph of clone. Scan inputs and outputs aren't modified inplace, so multiple scan can share them.

for loop and the print deleted.

modifications done.

cmodule respects flake8 now.

5055:Port ProfileMode GPU to new back-end and profiling.py

Added meaningful message when missing inputs to scan.

Test abstract conv

Change grad to L_op 

Adding scipy.special modified Bessel function ops

Documentation on gpu float16 ops.

libraries not found by g++ are now printed to the user.

Diag --> AllocDiag