New comment by tornaria on void-packages repository

https://github.com/void-linux/void-packages/pull/34030#issuecomment-981173383

Comment:
New version:
 - uses system maxima-ecl (from #34273, included in this PR for convenience)
 - fixes the issue with a couple of gap symlinks not being removed by xbps-remove (see https://github.com/void-linux/xbps/issues/435)

As far as I tested, all tests pass on x86_64 (glibc and musl).