Add --description-file=DESCRIPTION_FILE option to post-review
Review Request #597 — Created Oct. 19, 2008 and submitted
Added --description-file=DESCRIPTION_FILE option to allow a text file containg a lengthy review description to passed to post-review. Added a check to confirm that --description-file and --description are not both used as they are to be considered mutually exclusive. Added a check to confirm that the specified file exists.
Tested the following: post-review --help to confirm expected usage information is displayed. post-review --description="cmd line dec" --descritpion-file="/tmp/test.txt" to confirm error generated if these mutually exclusive options are used together. post-review --descritpion-file="/tmp/deoes_not_exist.txt" to confirm that an error is generated if the specified file doe not exist. post-review --descritpion-file="/tmp/desc.txt" against a local server to confirm that a multi-line file with indendation appears as expected in the generated review.