AIX 1.x can't have files named '@'.

PR:		1317
Obtained from:
Submitted by:	David Schuler <schuld@btv.ibm.com>
Reviewed by:	Dean Gaudet, Jim Jagielski, Martin Kraemer


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@79485 13f79535-47bb-0310-9956-ffa450edef68