[glob/aux files] Remove undocumented Stdout dump, cleanup flags.

Fixes #10640

We remove the `StdOut` dump target, so now dump will only happen if a
file is specified. Indeed, we make the default no to dump, and enable
dump only in coqc, moving the option to the `Coqcargs` module.

No need for a changes entry as this feature was undocumented, and no
use case was given when introduced.

Output to feedback must be explicitly enabled by clients / coqidetop,
and we have thus also removed the undocumented option `-feedback-glob`.

0 files changed, 0 insertions, 0 deletions