K 10
svn:author
V 6
emaste
K 8
svn:date
V 27
2018-11-02T21:20:46.324215Z
K 7
svn:log
V 444
newvers.sh: fix git false positive -dirty tag

Assuming that any output from `git diff-index --name-only` implies
changes in the working tree results in false positives: files with
metadata, but not content, changes are also listed.

Check that content differences exist before adding the -dirty tag to
the git hash.

PR:		229230
Reviewed by:	markj
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D15968

END