Merge r1783440 from 2.2.x:

* server/core.c (merge_core_server_configs): Fix merging of
  HttpProtocolOptions from global to vhost context.

Reviewed by: jorton, wrowe, covener


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x-merge-http-strict@1783441 13f79535-47bb-0310-9956-ffa450edef68