Add SHA256 checksums.
Make use of SUB_FILES.
Use REINPLACE_CMD instead of perl.
Miscellaneous other cleanups.
PR: ports/96491
Submitted by: edwin
Approved by: orlando@break.net (maintainer, timeout 2 weeks)
Upgrade to portrevision 2242 and make it possible to run
multiple vm's running at the same time.
Submitted by: Orlando Bassotto <orlando.bassotto@ieo-research.it>