util/perl/OpenSSL/config.pm: move misplaced Windows and VMS entries

util/perl/OpenSSL/config.pm: move misplaced Windows and VMS entries

OpenSSL::config::guess_system() is supposed to return system triplets.
However, for Windows and VMS, it returned the final OpenSSL config
target instead.  We move the entries for them to the table that
OpenSSL::config::map_guess() uses, so it can properly convert the
input triplet to an OpenSSL config target.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/12339)