Extend the IMA policy language with "mode=IXUGO" to identify files with
the execute mode bit enabled.
Examples:
measure func=FILE_CHECK mode=IXUGO
appraise func=FILE_CHECK appraise_type=imasig mode=IXUGO
Suggested-by: Steve Grubb <sgrubb@xxxxxxxxxx> (based on execute mode bit)
Signed-off-by: Mimi Zohar <zohar@xxxxxxxxxxxxx>