Allow CPPPATH to be overriden in the environment
Allow CPPPATH to be overriden in the environment

cloudant/bigcouch,georgemarshall/bigcouch,andrejb/cloudant_bigcouch,kofron/bigcouch,Asquera/bigcouch,breezjw/bigcouch,linearregression/bigcouch,PerilousApricot/bigcouch,breezjw/bigcouch,andrejb/cloudant_bigcouch,andrejb/cloudant_bigcouch,kofron/bigcouch,breezjw/bigcouch,georgemarshall/bigcouch,linearregression/bigcouch,cloudant/bigcouch,andrejb/cloudant_bigcouch,breezjw/bigcouch,linearregression/bigcouch,Asquera/bigcouch,PerilousApricot/bigcouch,andrejb/cloudant_bigcouch,Asquera/bigcouch,kofron/bigcouch,kofron/bigcouch,PerilousApricot/bigcouch,Asquera/bigcouch,cloudant/bigcouch,PerilousApricot/bigcouch,cloudant/bigcouch,andrejb/cloudant_bigcouch,linearregression/bigcouch,cloudant/bigcouch,Asquera/bigcouch,georgemarshall/bigcouch,georgemarshall/bigcouch,georgemarshall/bigcouch,breezjw/bigcouch,cloudant/bigcouch,georgemarshall/bigcouch,kofron/bigcouch,linearregression/bigcouch,PerilousApricot/bigcouch,kofron/bigcouch,andrejb/cloudant_bigcouch,breezjw/bigcouch,PerilousApricot/bigcouch,linearregression/bigcouch,linearregression/bigcouch,cloudant/bigcouch,Asquera/bigcouch