Fix the cmd command for mod_include. When we are processing

a cmd command, we do not want to use the r->filename to set
the command name.  The command comes from the SSI tag.  To do this,
I added a variable to the function that builds the command line
in mod_cgi.  This allows the include_cmd function to specify
the command line itself.

PR:	8772


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@92150 13f79535-47bb-0310-9956-ffa450edef68