Update to 1.0.6

• While I'm here:
  • Add LICENSE_FILE
  • Regenerate patch file with makepatch:
  • Update WWW

Changes: https://sourceforge.net/projects/sshpass/files/sshpass/1.06/ChangeLog/view
PR: 216319
Submitted by: Hung-Yi Chen <gaod@hychen.org> (maintainer)