Add safety cast in queue tutorial code that avoids casting a potentially non-pointer-sized "int" to a "void*".

"convolve_cy.so" -> "compute_cy.so" to match imports used in this tutorial.

“It have”-> “it has”
“Parralelism” -> “parallelism”

Rename the options of the "check_size" feature to make them more obvious: "warn" warns, "error" fails, and "extend" silently allows extending.
Closes #2627.

Explicitly call out the different name used for the wrapper `.pyx` file vs. the other C++ sources

As a new user, I was following along and just called the `.pyx` file `Rectangle.pyx` like everything else which was kinda confusing then when in the `wrapping_CPlusPlus/setup.py` there's a `setup(ext_modules=cythonize("rect.pyx"))` and I was thinking that maybe that file was magically created somehow and was miffed.

Hoisted the blurb on why the file name needs to be different without some additional work and worded it in there.

Enable the NumPy 1.7 API macro in all NumPy integration tests that do not rely on deprecated C-API internaly.

Closes #2587.

Remove docs note about fused types being "experimental". They are old enough by now to consider them an established language feature.

ignored the build of the docs in git.

Closes #2489.