[LTP] [PATCH] run-posix-option-group-test.sh: Log and exit if one attempts to run tests without compiling

[Petr Vorel]

Hi Sharan,

> > Currently, run-posix-option-group-test.sh erroneously
> > logs "***Tests Completed***" when no test has actually run if the script is invoked
> > to run without actually compiling the tests.

> > Check if the .run-test files actually exist before attempting to run them.
> > If not found, log a message indicating the problem and suggest to check if
> > the tests were compiled. Exit the script without attempting to run other
> > tests.
> Can you please describe how this happen? open POSIX failed to compile?

OK, you noted this in the commit message.

Merged with fixed bashism, improved style and commit message.

Thanks!

Kind regards,
Petr