bugfix: rsgtutil sometimes crashed in verify mode if file did not exist
rsgtutil: avoid emitting unnecessary error messages
Merge branch 'v7-stable' into v8-stable

Conflicts:
	ChangeLog
Merge branch 'v8-stable'

Conflicts:
	ChangeLog
	configure.ac
Merge remote-tracking branch 'github/master'

Conflicts:
	ChangeLog