Can't assume the filepointer is really 0 when offset is 0. A handler can...

Can't assume the filepointer is really 0 when offset is 0. A handler can create brigades containing multiple file buckets with arbitrary offsets


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@103125 13f79535-47bb-0310-9956-ffa450edef68