Perl: Use our own globbing wrapper rather than File::Glob::glob

File::Glob::glob is deprecated, it's use generates this kind of
message:

    File::Glob::glob() will disappear in perl 5.30. Use File::Glob::bsd_glob() instead. at ../master/Configure line 277.

The first idea was to use a construction that makes the caller glob()
use File::Glob::bsd_glob().  That turned out not to work well
everywhere, so instead, we make our own wrapper, OpenSSL::Glob and use
that.

Fixes #4636

(this is an adaptation of #4040 and part of #4069, for 1.1.0)

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4666)