[FIXED HUDSON-8007] apply patch from raspy to allow build to start when

polling interval is shorter than quiet period and we need a build/workspace
for polling (don't continuously push out the quiet period)


git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@36849 71c3de6d-444a-0410-be80-ed276b4c234a