tests: fix configutl test on Windows

tests: fix configutl test on Windows

In Windows makefile, "del /Q /S /F test\*.exp" command is called.
Due to use of /S switch and old filenames compatibility
magic, it deletes also all *.expected files.
This make subsequent run of configtest to fail.

As this is the only test using these names (and cryptic
workarounds in makefile are unreadable), let's just
rename expected files to *-exp.out suffix.

Also fix two alien tabs in script.

Fixes:  https://github.com/openssl/project/issues/1894
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Reviewed-by: Nikola Pajkovsky <nikolap@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Eugene Syromiatnikov <esyr@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
MergeDate: Tue Mar 10 19:42:26 2026
(Merged from https://github.com/openssl/openssl/pull/30324)