Add text/xml, audio/mpeg, video/quicktime support to mime magic file.

(Justin changed the audio/mpeg sequence to match file(1)'s listing.)

PR: 7730
Submitted by:	Linus Walleij <triad@df.lth.se>
Reviewed by:	Justin Erenkrantz
(minor change with no effect on code, so committing.)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@94186 13f79535-47bb-0310-9956-ffa450edef68