added Call Graph and aggressive inlining, still a lot to polish but it works on the two real benchmarks
added Call Graph and aggressive inlining, still a lot to polish but it works on the two real benchmarks

ihc/futhark,diku-dk/futhark,ihc/futhark,diku-dk/futhark,diku-dk/futhark,HIPERFIT/futhark,HIPERFIT/futhark,mrakgr/futhark,diku-dk/futhark,CulpaBS/wbBach,ihc/futhark,mrakgr/futhark,diku-dk/futhark,HIPERFIT/futhark,mrakgr/futhark