Fixed a couple places where a check for the default Content-Type was

not properly checking both the value configured by the DefaultType
directive and the DEFAULT_TYPE symbol in httpd.h.  Changed the value
of DEFAULT_TYPE to match the documented default (text/plain).

Submitted by: Dean Gaudet
Reviewed by: Roy Fielding, Jim Jagielski


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@78124 13f79535-47bb-0310-9956-ffa450edef68