fixed an issue with older PCAP libraries where PCAP_NETMASK_UNKNOWN was not defined in pcap.h prior to 1.1.0
fixed an issue with older PCAP libraries where PCAP_NETMASK_UNKNOWN was not defined in pcap.h prior to 1.1.0

git-svn-id: 5398946ba177a3e438c2dae55e2cdfc2fb96c905@8226 a9d63959-f2ad-4865-b262-bf0e56cfafb6

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