* ext/openssl/ossl_pkey_ec.c (ossl_ec_point_mul): Validate the
arguments before passing to EC_POINT(s)_mul(). Add description of this
method. [ruby-core:65152] [Bug #10268]
* test/openssl/test_pkey_ec.rb (test_ec_point_mul): Test that
OpenSSL::PKey::EC::Point#mul works.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55048 b2dd03c8-39d4-4d8f-98ff-823fe69b080e