check if QHull is present for tools
check if QHull is present for tools

git-svn-id: 5398946ba177a3e438c2dae55e2cdfc2fb96c905@4119 a9d63959-f2ad-4865-b262-bf0e56cfafb6

ipa-rmb/pcl,lydhr/pcl,3dtof/pcl,shangwuhencc/pcl,nikste/pcl,KevenRing/pcl,krips89/pcl_newfeatures,locnx1984/pcl,zavataafnan/pcl-truck,v4hn/pcl,lebronzhang/pcl,closerbibi/pcl,jeppewalther/kinfu_segmentation,shivmalhotra/pcl,stefanbuettner/pcl,shyamalschandra/pcl,shyamalschandra/pcl,fskuka/pcl,drmateo/pcl,DaikiMaekawa/pcl,lebronzhang/pcl,shyamalschandra/pcl,stefanbuettner/pcl,jakobwilm/pcl,soulsheng/pcl,starius/pcl,mschoeler/pcl,raydtang/pcl,sbec/pcl,closerbibi/pcl,srbhprajapati/pcl,Nerei/pcl_old_repo,cascheberg/pcl,kanster/pcl,fskuka/pcl,stfuchs/pcl,kanster/pcl,LZRS/pcl,v4hn/pcl,MMiknis/pcl,the-glu/pcl,sbec/pcl,stefanbuettner/pcl,cascheberg/pcl,nikste/pcl,3dtof/pcl,soulsheng/pcl,cascheberg/pcl,krips89/pcl_newfeatures,soulsheng/pcl,closerbibi/pcl,MMiknis/pcl,drmateo/pcl,lebronzhang/pcl,locnx1984/pcl,pkuhto/pcl,zavataafnan/pcl-truck,damienjadeduff/pcl,KevenRing/pcl,closerbibi/pcl,srbhprajapati/pcl,shyamalschandra/pcl,zhangxaochen/pcl,wgapl/pcl,raydtang/pcl,mschoeler/pcl,jakobwilm/pcl,lebronzhang/pcl,srbhprajapati/pcl,chatchavan/pcl,simonleonard/pcl,mschoeler/pcl,lydhr/pcl,ResByte/pcl,lydhr/pcl,RufaelDev/pcc-mp3dg,shangwuhencc/pcl,lydhr/pcl,jakobwilm/pcl,ResByte/pcl,Tabjones/pcl,lydhr/pcl,damienjadeduff/pcl,soulsheng/pcl,srbhprajapati/pcl,the-glu/pcl,fanxiaochen/mypcltest,RufaelDev/pcc-mp3dg,the-glu/pcl,RufaelDev/pcc-mp3dg,simonleonard/pcl,wgapl/pcl,nh2/pcl,shivmalhotra/pcl,raydtang/pcl,KevenRing/vlp,pkuhto/pcl,srbhprajapati/pcl,msalvato/pcl_kinfu_highres,zhangxaochen/pcl,krips89/pcl_newfeatures,sbec/pcl,chenxingzhe/pcl,jakobwilm/pcl,cascheberg/pcl,msalvato/pcl_kinfu_highres,RufaelDev/pcc-mp3dg,mikhail-matrosov/pcl,jeppewalther/kinfu_segmentation,DaikiMaekawa/pcl,jakobwilm/pcl,nh2/pcl,KevenRing/vlp,stfuchs/pcl,shangwuhencc/pcl,shivmalhotra/pcl,mikhail-matrosov/pcl,fanxiaochen/mypcltest,drmateo/pcl,closerbibi/pcl,fskuka/pcl,nikste/pcl,Nerei/pcl_old_repo,stfuchs/pcl,chenxingzhe/pcl,kanster/pcl,raydtang/pcl,shangwuhencc/pcl,Tabjones/pcl,stfuchs/pcl,nikste/pcl,zhangxaochen/pcl,cascheberg/pcl,RufaelDev/pcc-mp3dg,nh2/pcl,krips89/pcl_newfeatures,shivmalhotra/pcl,sbec/pcl,starius/pcl,ipa-rmb/pcl,damienjadeduff/pcl,mikhail-matrosov/pcl,jeppewalther/kinfu_segmentation,kanster/pcl,zavataafnan/pcl-truck,DaikiMaekawa/pcl,shivmalhotra/pcl,3dtof/pcl,mikhail-matrosov/pcl,shyamalschandra/pcl,KevenRing/pcl,fanxiaochen/mypcltest,mschoeler/pcl,KevenRing/vlp,KevenRing/vlp,simonleonard/pcl,Tabjones/pcl,chenxingzhe/pcl,Nerei/pcl_old_repo,nikste/pcl,chatchavan/pcl,chenxingzhe/pcl,stefanbuettner/pcl,jeppewalther/kinfu_segmentation,damienjadeduff/pcl,starius/pcl,fskuka/pcl,LZRS/pcl,shangwuhencc/pcl,LZRS/pcl,Tabjones/pcl,MMiknis/pcl,fskuka/pcl,ipa-rmb/pcl,raydtang/pcl,chatchavan/pcl,chenxingzhe/pcl,mikhail-matrosov/pcl,jeppewalther/kinfu_segmentation,LZRS/pcl,pkuhto/pcl,ResByte/pcl,simonleonard/pcl,krips89/pcl_newfeatures,locnx1984/pcl,zavataafnan/pcl-truck,lebronzhang/pcl,chatchavan/pcl,Nerei/pcl_old_repo,mschoeler/pcl,soulsheng/pcl,damienjadeduff/pcl,locnx1984/pcl,fanxiaochen/mypcltest,KevenRing/pcl,ipa-rmb/pcl,LZRS/pcl,zhangxaochen/pcl,kanster/pcl,ResByte/pcl,ipa-rmb/pcl,starius/pcl,locnx1984/pcl,msalvato/pcl_kinfu_highres,wgapl/pcl,the-glu/pcl,drmateo/pcl,KevenRing/pcl,msalvato/pcl_kinfu_highres,MMiknis/pcl,stfuchs/pcl,3dtof/pcl,MMiknis/pcl,DaikiMaekawa/pcl,wgapl/pcl,KevenRing/vlp,3dtof/pcl,starius/pcl,pkuhto/pcl,DaikiMaekawa/pcl,the-glu/pcl,nh2/pcl,stefanbuettner/pcl,fanxiaochen/mypcltest,v4hn/pcl,pkuhto/pcl,v4hn/pcl,Tabjones/pcl,sbec/pcl,drmateo/pcl,zavataafnan/pcl-truck,msalvato/pcl_kinfu_highres,wgapl/pcl,ResByte/pcl,simonleonard/pcl,zhangxaochen/pcl,v4hn/pcl