minor edits to 3 7.9.3 version history items
===GT=== #3287
===GT=== #3387
===GT=== #3369
Remove version history item that is NOT in 7.9.3.
set 7.9.3 release date as Jan 16, 2013
copyright year changed from 2012 to 2013 in doc directory
Merge branch 'V7_9_3-branch'