[strongSwan] User openssl's PUBKEY_VERIFY instead of gmp's for CVE-2017-11185

[Tobias Brunner]

Hi Karthik,

> (/almost/ because rare case of openssl can't verify signature and so gmp
> takes over)

Actually, it's not the verifying that will fall back to a different
implementation, but the parsing of the public key.  Once it is
successfully parsed by an implementation that implementation will be
used to verify signatures for this key.

Regards,
Tobias