minor edit and spelling correction to 7.9.4 version history item
===GT=== #3477
edit 7.9.4 version history item
===GT=== #3367
edit 7.9.4 version history item
===GT=== #3455
edit 7.9.4 version history item
===GT=== #3319
remove version history item, as the feature is not ready to announce in
7.9.4
===GT=== #3386
Merge branch 'V7_9_4-branch'