MySQL/Connector update - 1.0.8

Well, I think there is nothing more to say..
Just, changed the link from launchpad.net to the original source at MySQL (Orcale) and added the correct md5sum in the next commit, as you can see in the diff.
File to merge here is //recipes/mysql_connector/recipe.sh

PS: Feel free to add other changes and work on cythonizer :)

Finally:
* Updated README.rst to the latest NDK and added links to download NDK + SDK.