If we are trying to execute a script, the exact thing we are executing

currently isn't logged if it fails.  This fixes it so it is logged, with
the Win32 error code returned from the failed CreateProcess() call.

PR:
Obtained from:
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git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@82335 13f79535-47bb-0310-9956-ffa450edef68