Merge r1800788 from trunk:

Add mod_proxy_hcheck to generated httpd.spec file.  PR 60506.


Submitted by: ylavic
Reviewed by: ylavic, rpluem, jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800862 13f79535-47bb-0310-9956-ffa450edef68