[evolution-patches] [calendar-groupwise] revised patch for 309499

[Chakravarthi <pchakravarthi novell com>]

hi

 Revised patch for bug # 309499
 is attached based on the suggestions received.

 This solves the issue that delegation of a meeting
 to B after delegation to A results in mail being sent 
 to A again. 

 please review.

regards.