PR 39727: Fixup ETag handling in mod deflate (updated following extensive

discussion on-list).
This is not a full-and-final fix, because we don't ourselves do anything
useful with these ETags.  But at least we're no longer screwing up clients.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@607219 13f79535-47bb-0310-9956-ffa450edef68