RELEASE NOTES 2.0-M6

[Hernan Cunico]

Alright, here is the template for the release notes. 

Need your input on the significant changes for this milestone release. Here is 
the link.
http://cwiki.apache.org/GMOxDOC20/release-notes-20-m6txt.html

Pls chime in with the updates.

Cheers!
Hernan