Add -f option to mkfs if fstype=xfs
Merge pull request #349 from Florent38/xfs

Add -f option to mkfs if fstype=xfs
fix the wrong date sequence for variable TSM_RESTORE_PIT_DATE
close #318
fix the misleading error message

ERROR: HP Smart Storage Administrator CLI not found: hpacucli nor hpssacli

close #351
Merge branch 'master' of github.com:rear/rear
changed the new default OUTPUT=ISO message
update version/release date in rear main script and update man page with new default OUTPUT setting
fix the spec files (got screwed up somehow?)
Where ever it was possible added the "-l (local)" option to df command. Related to issue #350;
Also started to add new GNU license lines.
defined BACKUP_TYPE= (empty is full or incremental)
remove .gitignore from wrong directory
adding /run/systemd/journal/syslog
RHEL7 prefers to have /run/lvm and /run/udev
remove mingetty from REQUIRED_PROGS list (it is still part of the PROGS list)

the mingetty RPM requirement is still in the spec file (except for RHEL 7 - todo)
fix the pull request #349 as mkfs command doesnot know about -f option