gmp: modernize
gmp: add test
mpfr: modernize
mpfr: add test
mpfi: modernize
mpfi: add test

Closes #35313.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
nvm 0.22.0

Closes #35318.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
test-bot: check if dependents are installed.

Before fetching or installing with no args.
test-bot: tweak readability.
test-bot: clean harder if first clean fails.
Merge remote-tracking branch 'upstream/master'