usage_RevList=List commit objects in reverse chronological order
usage_RevParse=Pick out and massage parameters
usage_RevParseAll=Show all refs found in refs/
+usage_RevParseVerify=Verify that exactly one parameter is provided, and that it can be turned into \
+a raw 20-byte SHA-1 that can be used to access the object database. If so, emit it to the standard \
+output; otherwise, error out.
usage_S3Bucket=S3 bucket name
usage_S3Expiration=Authorization validity in seconds, default 60 sec
usage_S3Region=S3 region (us-east-1 | us-west-1 | us-west-2 | eu-west-1 |\