the distfile was renamed (only the EXTRACT_SUFX changed and it still has
the same content and checksum).
- Some cleanup, no longer chmod(8) the distfile in DISTDIR executable
without reason and add a do-build target to brandelf(1) the binaries
instead of doing this in the do-install target so that the binaries in
WRKDIR actually can be used after a `make all` run.
Submitted by: Marius Strobl <marius@alchemy.franken.de>