add guardians around a gcc pragma
add guardians around a gcc pragma

git-svn-id: 5398946ba177a3e438c2dae55e2cdfc2fb96c905@4885 a9d63959-f2ad-4865-b262-bf0e56cfafb6

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