installer: fix RPM requires:

The findrequires scripts are apparently ignored by current RPM.
Apparently an additional variable needs to be defined so they are used.

http://www.redhat.com/archives/rpm-list/2005-August/msg00034.html

solenv/bin/modules/installer/epmfile.pm

@@ -1424,7 +1424,7 @@ sub set_autoprovreq_in_specfile
 
     if ( $findrequires )
     {
-        $autoreqprovline = "AutoProv\: no\n%define __find_requires $bindir/$findrequires\n";
+        $autoreqprovline = "AutoProv\: no\n%define _use_internal_dependency_generator 0\n%define __find_requires $bindir/$findrequires\n";
     }
     else
     {