[FIX] Fix vacuum cleaning both for time and count based cleaning,        adding a safeguard against cleaning recently used rows. 
[FIX] Fix vacuum cleaning both for time and count based cleaning, 
      adding a safeguard against cleaning recently used rows. 

gisce/openobject-server,gisce/openobject-server,MarkusTeufelberger/openobject-server,splbio/openobject-server,splbio/openobject-server,MarkusTeufelberger/openobject-server,splbio/openobject-server,gisce/openobject-server,MarkusTeufelberger/openobject-server