This patch sets environment variable _EDC_ADD_ERRNO2 when opening the

logs so that when strerror(errno) is invoked to log an error, the reason
code associated with that errno will also be logged.  This is only for
OS/390.  The reason code is almost always necessary since the errno is
often too general.  It is almost impossible to figure out what really
went wron without having the additinal reason code information.

Submitted by:	Ovies Brabson
Reviewed by:	Bill Stoddard


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@85620 13f79535-47bb-0310-9956-ffa450edef68