Fix CMake for PNG (with the quotation mark, the "optimized/debug" will be misinterpreted).
Fix CMake for PNG (with the quotation mark, the "optimized/debug" will be misinterpreted).

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