archivers/fastjar: Update to 0.98

• Switch to variant hosted on https://savannah.nongnu.org
• Import patches from Debian

Changelog:
https://cvs.savannah.nongnu.org/viewvc/fastjar/fastjar/NEWS?revision=1.11&view=markup

Originally submitted by swills@

References:
https://sources.debian.org/data/main/f/fastjar/2%3A0.98-7/debian/patches/fix-update-mode.diff
https://sources.debian.org/data/main/f/fastjar/2%3A0.98-7/debian/patches/jartool.diff

PR: 254198
Approved by: portmgr (maintainer timeout, 3+ years)