BSD: implement virNetDevTapCreate() and virNetDevTapDelete()
BSD: implement virNetDevTapCreate() and virNetDevTapDelete()

Implementation uses SIOCIFCREATE2 and SIOCIFDESTROY ioctls.

libvirt/libvirt,rlaager/libvirt,elmarco/libvirt,shugaoye/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,cbosdo/libvirt,datto/libvirt,andreabolognani/libvirt,taget/libvirt,zippy2/libvirt,jardasgit/libvirt,taget/libvirt,olafhering/libvirt,eskultety/libvirt,shugaoye/libvirt,cbosdo/libvirt,rlaager/libvirt,VenkatDatta/libvirt,elmarco/libvirt,jardasgit/libvirt,rlaager/libvirt,libvirt/libvirt,eskultety/libvirt,fabianfreyer/libvirt,elmarco/libvirt,andreabolognani/libvirt,libvirt/libvirt,olafhering/libvirt,elmarco/libvirt,crobinso/libvirt,zippy2/libvirt,elmarco/libvirt,zhlcindy/libvirt-1.1.4-maintain,agx/libvirt,datto/libvirt,shugaoye/libvirt,taget/libvirt,shugaoye/libvirt,agx/libvirt,eskultety/libvirt,zippy2/libvirt,nertpinx/libvirt,rlaager/libvirt,jardasgit/libvirt,crobinso/libvirt,nertpinx/libvirt,zhlcindy/libvirt-1.1.4-maintain,crobinso/libvirt,fabianfreyer/libvirt,libvirt/libvirt,cbosdo/libvirt,jardasgit/libvirt,jfehlig/libvirt,olafhering/libvirt,rlaager/libvirt,fabianfreyer/libvirt,VenkatDatta/libvirt,jfehlig/libvirt,datto/libvirt,cbosdo/libvirt,olafhering/libvirt,zhlcindy/libvirt-1.1.4-maintain,nertpinx/libvirt,jfehlig/libvirt,cbosdo/libvirt,zhlcindy/libvirt-1.1.4-maintain,andreabolognani/libvirt,andreabolognani/libvirt,taget/libvirt,agx/libvirt,shugaoye/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,agx/libvirt,agx/libvirt,datto/libvirt,crobinso/libvirt,zhlcindy/libvirt-1.1.4-maintain,jardasgit/libvirt,VenkatDatta/libvirt,zippy2/libvirt,nertpinx/libvirt,datto/libvirt,eskultety/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,eskultety/libvirt,taget/libvirt,VenkatDatta/libvirt