[arch-general] MAKEFLAGS remodelation

[SpinFlo]

>
> hi


MAKEFLAGS in makepkg.conf is disabled (#) by default. add makeflags
variable like "--parellel-jobs=${MAKEFLAGS/-j}" in PKGBUILD only gets
errors (or not work).

i think the best method is set (and enable by default) MAKEFLAGS with nproc
value internally in makepkg tools (like MAKEFLAGS="j$(nproc)"). and only
set MAKEFLAGS in makepkg.conf if want avoid established value (set less
threads, for example)

about waf, yes, can use JOBS or --parellel-jobs, but if you test
with/without these options, without options waf use all thread available in
the system (for example in my system is 8 threads), if set JOBS or
--parellel-jobs with all thread available (8) have the same result.

sorry my english

greetings