[Cin] minor configure.ac changes.

[Phyllis Smith]

Both configure.ac patches have been tested by Andrea and now checked into
GIT.  Thanks.

On Thu, Nov 3, 2022 at 6:00 AM Andrew Randrianasulu <randrianasulu at gmail.com>
wrote:

> First one adds no-unknown-warnings cflag back especially if clang was
> requested (reduces amount of clang chatter)
>
> second one address (hopefully) pkg-config's loud complains about missing
> libs or headers during configure. I tested it briefly on Android/termux and
> it seems to work, but better testing much wished for.
>
> If Phyllis will like second patch I can add the same '2>/dev/null'  to
> cinelerra/Makefile, where same pkg-config added by me complains
> (harmlessly) about not found libs.
>
> Thing is, I prefer detailed output in case something goes wrong. But I do
> not mind silencing some parts I added in hope my memory will serve me!
>
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