Fix ruby-Bugs-11513.

* ext/openssl/ossl_pkey_ec.c
  New methods EC::Point.[eql,make_affine!,invert!,on_curve?,infinity?]
  By default output the same key form as the openssl command.

* ext/openssl/ossl_rand.c
  New method Random.status?

* test/openssl/test_ec.rb
  New tests.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@12572 b2dd03c8-39d4-4d8f-98ff-823fe69b080e