Revert "remove old code for running 'test' binary with journaling enabled (journaling is now the default)"

This reverts commit c409dd93ec121d607c177424165104749f610dfb.

dbtests/framework.cpp

@@ -304,6 +304,13 @@ namespace mongo {
                 log() << "32bit" << endl;
             log() << "random seed: " << seed << endl;
 
+            if( time(0) % 3 == 0 && !nodur ) {
+                cmdLine.dur = true;
+                log() << "****************" << endl;
+                log() << "running with journaling enabled to test that. dbtests will do this occasionally even if --dur is not specified." << endl;
+                log() << "****************" << endl;
+            }
+
             FileAllocator::get()->start();
 
             vector<string> suites;