Fix the wrong doc caused by monkey patch

[moskytw]

Some of the doc of mosql.util now is covered by mosql.mysql. It is because Sphinx imports all of the modules referred by doc, and the mosql.mysql is a monkey patch for mosql.util.

Solution A: Avoid referred mosql.mysql and such modules in doc. Manually create the doc.

Solution B: Don't use monkey patch anymore.

It should be resolved as soon as possible.

[moskytw]

I found a new solution which you just need to ensure Sphinx don't import the monkey patches.

First, you need to update all doc:

make html

Then, change the modification time of util.rst:

touch util.rst
make html

In this way, Sphinx's autodoc will only import the mosql.util in this compilation, so the mokey patches will not cover the doc of mosql.util.