MFH: r491550
sysutils/flexbackup: Fix some issues
- flexbackup shows a perl deprecated warning with perl 5.16
- lzma support compression level 0
- compress flags do not work, if you use afio+lzma
PR: 221003
Submitted by: Lars Herschke <lhersch@dssgmbh.de>
Approved by: ports-secteam bug fix blanket