MySQL for Python MySQLdb-SVN

Reimplement MySQL->Python type conversion in C; much simpler and easier to deal with now. Hey, all my tests pass, so I guess that means I need to write some more tests.

Cursor MixIns: DEAD. More of the new type conversion scheme exposed. Two tests failing because encoding hasn't been finished yet.

Fix #2671682. (from 1.2 branch)

Bring back conversions for the time being, until we can get trunk actually
working right.

Conflict-filled merge from 1.2br for 558:559 set and exception fixes

Trivial patch for dict.has_key() being deprecated going forward.

https://sourceforge.net/tracker/index.php?func=detail&aid=2565545&group_id=22307&atid=374934

Tons of changes from major refactoring/cleanup. This is all really broken
right now. In particular, all results are returned as strings.

More doc fixes

Formatting and PyLint fixes. Final score: 8.21/10

Merge changes from 1.2 branch (r470:483): Mostly build-related.