This PR updates the profile module's documentation to reflect some significant differences between profile.Profile and cProfile.Profile.

For example, the current docs imply that the Python version has enable() and disable() methods - it doesn't. The two versions also have different __init__ parameters (which are describe elsewhere in the document).

In this version there is a section for each class, with the proper list of supported methods. I've also noted where the different classes have different behavior for the same method - cProfile.Profile's print_stats() method needs to be initialized, for example.

For convenience, the rendered docs look like this:

These changes could apply to Python 3.7 as well. Versions before that are also deficient, but need some more tweaking due to the addition of the SortKey enum.

https://bugs.python.org/issue32017