[Yhc] Buildbot goes nuts!

Hi, After Dimitry's patch buildbot went nuts and fired off a new build every 10 minutes. I guess this is due to parsing issues in a similar way the version stuff was, but only Andrew has this code so only Andrew will be able to fix it. I have committed a patch which will hopefully stop this cycle going on. Dimitry: Can you record some dummy patch with no comment just before you do a scons push? This should at least stop buildbot going crazy until Andrew gets back and can take a look at it. Thanks Neil