Rewrote the filename extenstion checking code so the order is irrelevant.

i.e. foo.html.en.gz and foo.en.gz.html will give the same headers. The old
code would ignore the en and gz in the latter example.

Another benefit is that you can, for example, do "AddLanguage en html"
and all HTML files will be tagged as English as well as content-type
text/html (asuming this is so defined in mime.types or an AddType).


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@76404 13f79535-47bb-0310-9956-ffa450edef68