Add dbdeploy support like available in phing

[patcon]

Just seems to be a feature that would help drive uptake. Apologies, but I don't think I have the know-how to help out with this myself at the moment -- was just comparing Phing and Pake and saw that this was a feature which gave Phing an advantage :)

[patcon]

http://peardbdeploy.sourceforge.net/docs/
http://www.davedevelopment.co.uk/2008/04/14/how-to-simple-database-migrations-with-phing-and-dbdeploy/