Fix scons magic in test build
Fix scons magic in test build

New test files weren't being included in the test runner binary on clean
builds.

gaoning777/logcabin,TigerZhang/logcabin,tempbottle/logcabin,jimpelton/mingle-logcabin,logcabin/logcabin,TigerZhang/logcabin,nhardt/logcabin,jimpelton/mingle-logcabin,logcabin/logcabin,tempbottle/logcabin,chaozh/logcabin,dankenigsberg/logcabin,logcabin/logcabin,gaoning777/logcabin,logcabin/logcabin,chaozh/logcabin,dankenigsberg/logcabin,nhardt/logcabin,dankenigsberg/logcabin,nhardt/logcabin,chaozh/logcabin,chaozh/logcabin,gaoning777/logcabin,nhardt/logcabin,TigerZhang/logcabin,jimpelton/mingle-logcabin,TigerZhang/logcabin,gaoning777/logcabin,tempbottle/logcabin,tempbottle/logcabin,dankenigsberg/logcabin