PR:

Submitted by:	Ralf Engelschall
Reviewed by:	Brian Behlendorf

  *) Add <IfDefine>..</IfDefine> sections to the core module (with same spirit
     as <IfModule>..</IfModule> sections) which can be used to skip or process
     contained commands dependend of ``-D PARAMETER'' options on the command
     line.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@81563 13f79535-47bb-0310-9956-ffa450edef68