Configure: process shared-info.pl later

The reason is that the shared-info attributes may depend on %disabled,
so we need to process all enablings/disablings first.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8846)

(cherry picked from commit 8f0dd6d9eec0e52feb1b19725c7134684bff28bc)