[libisofs/f16] (4 commits) ...Adjust release tag properly

[Robert Scheck]

Summary of changes:

  fbe52b7... Changed license from GPLv2 to GPLv2+ to correspond with sou (*)
  06c8bba... Added license LGPLv2+ due to make_isohybrid_mbr.c (*)
  507bca3... Upgrade to 1.2.6 (#893694) (*)
  009158d... Adjust release tag properly (*)

(*) This commit already existed in another branch; no separate mail sent