Optimize hashtable_set()
Optimize hashtable_set()

If a key already exists in the hashtable, use the existing pair
changing its value instead of removing the old one and allocating a
new pair.

yahoo/ygloo-external-jansson,firepick-delta/FireSight,chrullrich/jansson,OlehKulykov/jansson,akheron/jansson-debian,rogerz/jansson,akheron/jansson,wirebirdlabs/featherweight-jansson,attie/jansson,firepick1/jansson,simonfojtu/FireSight,simonfojtu/FireSight,akheron/jansson,OlehKulykov/jansson,slackner/jansson,markalanj/jansson,janetuk/jansson,firepick-delta/FireSight,rogerz/jansson,bstarynk/jansson,gameclosure/jansson,gameclosure/jansson,attie/jansson,firepick-delta/FireSight,yahoo/ygloo-external-jansson,Vorne/jansson,akheron/jansson,bstarynk/jansson,npmccallum/jansson,janetuk/jansson,yahoo/ygloo-external-jansson,firepick1/FireSight,rogerz/jansson,firepick1/jansson,npmccallum/jansson,liu3tao/jansson,akheron/jansson-debian,firepick1/FireSight,AmesianX/jansson,yahoo/ygloo-external-jansson,wirebirdlabs/featherweight-jansson,simonfojtu/FireSight,markalanj/jansson,akheron/jansson-debian,liu3tao/jansson,AmesianX/jansson,Mephistophiles/jansson,janetuk/jansson,firepick1/jansson,markalanj/jansson,rogerz/jansson,bstarynk/jansson,Vorne/jansson,gameclosure/jansson,slackner/jansson,janetuk/jansson,chrullrich/jansson,firepick1/FireSight,akheron/jansson-debian,Mephistophiles/jansson