net/rsync-bpc: Update to 3.0.9.12

While here:

• Reorder USES
• Strip rsync_bpc (Q/A warning)
• Update license

Changes: https://github.com/backuppc/rsync-bpc/releases/tag/3.0.9.12

PR: 225525
Submitted by: Alexander Moisseev <moiseev@mezonplus.ru> (maintainer)