New jira fields

[Owen O'Malley]

Hi all,
   For Hadoop core, I just added 3 new fields in jira. The first are  
flags, for when a jira's patch has been +1'ed and the second is for  
when it introduces an incompatible change. The other is the release  
note field. If you have a new feature or incompatible change, the  
patch developer should fill in the information for the user with  
respect to the change.

Thanks,
   Owen

PS. If HBase wants the fields too, let me know...