add heap dump on OOM, see #304
add heap dump on OOM, see #304

boldtrn/graphhopper,ratrun/graphhopper,graphhopper/graphhopper,devemux86/graphhopper,ammagamma/graphhopper,graphhopper/graphhopper,PGWelch/graphhopper,CEPFU/graphhopper,hguerrero/graphhopper,ratrun/graphhopper,fbonzon/graphhopper,don-philipe/graphhopper,tobias74/graphhopper,prembasumatary/graphhopper,boldtrn/graphhopper,fbonzon/graphhopper,joh12041/graphhopper,hguerrero/graphhopper,seeebiii/graphhopper,joh12041/graphhopper,PGWelch/graphhopper,devemux86/graphhopper,joh12041/graphhopper,don-philipe/graphhopper,hguerrero/graphhopper,routexl/graphhopper,boldtrn/graphhopper,seeebiii/graphhopper,komoot/graphhopper,fbonzon/graphhopper,seeebiii/graphhopper,routexl/graphhopper,komoot/graphhopper,devemux86/graphhopper,PGWelch/graphhopper,ammagamma/graphhopper,don-philipe/graphhopper,tobias74/graphhopper,don-philipe/graphhopper,ratrun/graphhopper,seeebiii/graphhopper,CEPFU/graphhopper,CEPFU/graphhopper,joh12041/graphhopper,prembasumatary/graphhopper,prembasumatary/graphhopper,hguerrero/graphhopper,fbonzon/graphhopper,tobias74/graphhopper,tobias74/graphhopper,CEPFU/graphhopper,routexl/graphhopper,boldtrn/graphhopper,routexl/graphhopper,ammagamma/graphhopper,ratrun/graphhopper,graphhopper/graphhopper,devemux86/graphhopper,komoot/graphhopper,PGWelch/graphhopper,prembasumatary/graphhopper,komoot/graphhopper,ammagamma/graphhopper,graphhopper/graphhopper