Replace the OASIS PKCS#11 header file with one from p11-kit

Replace the OASIS PKCS#11 header file with one from p11-kit

The OASIS pkcs11.h header has a restrictive license.  Replace the
pkcs11.h pkcs11f.h and pkcs11t.h headers with pkcs11.h from p11-kit.

For source distribution, the license for the OASIS headers itself
doesn't pose any licensing problem when combined with MPL license, but
it possibly creates problem for downstream distributors of BIND 9.

(cherry picked from commit c47fad24315f507ae3c671813c2e34e9e5e7e155)