[SQLObject] Take some reST

[Oleg B. <ph...@ph...>]

Hello, dear all! This is the time when one of my small dreams came true!
I always wanted to rename all reStructuredtext files to *.rst but always
was afraid to touch too mush, to create problems with merging and so on.
Today, when I only have one active branch covered with test and having
good doc builders, I finally decided to make that bold step. The front
page of the repositories and docs subdirectory now look much better:

https://github.com/sqlobject/sqlobject#readme

In other good news:

   -- I installed mxDateTime for tests, found and fixed a bug with MySQL;
   -- Omitted some rarely used not tested modules in .coveragerc;

Test coverage is now 86.8%!

Oleg.
-- 
     Oleg Broytman            http://phdru.name/            ph...@ph...
           Programmers don't die, they just GOSUB without RETURN.