Fix apibuild.py warnings about missing comment headers
Fix apibuild.py warnings about missing comment headers

Also improve wording of some comments.

jeckersb/libvirt,iam-TJ/libvirt,warewolf/libvirt,rmarwaha/libvirt,datto/libvirt,rmarwaha/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,jeckersb/libvirt,siboulet/libvirt-openvz,wiedi/libvirt,fabianfreyer/libvirt,emaste/libvirt,rmarwaha/libvirt,crobinso/libvirt,emaste/libvirt,cbosdo/libvirt,rlaager/libvirt,jfehlig/libvirt,rlaager/libvirt,jeckersb/libvirt,wiedi/libvirt,eskultety/libvirt,shugaoye/libvirt,soulxu/libvirt-xuhj,trainstack/libvirt,trainstack/libvirt,andreabolognani/libvirt,zhlcindy/libvirt-1.1.4-maintain,datto/libvirt,kantai/libvirt-vfork,olafhering/libvirt,soulxu/libvirt-xuhj,andreabolognani/libvirt,novel/fbsd-libvirt,rmarwaha/libvirt,siboulet/libvirt-openvz,agx/libvirt,bjzhang/libvirt,wiedi/libvirt,trainstack/libvirt,novel/fbsd-libvirt,jfehlig/libvirt,jardasgit/libvirt,usc-isi/libvirt,dumbbell/libvirt,warewolf/libvirt,wiedi/libvirt,dumbbell/libvirt,shugaoye/libvirt,rlaager/libvirt,agx/libvirt,crobinso/libvirt,usc-isi/libvirt,zhlcindy/libvirt-1.1.4-maintain,rlaager/libvirt,dumbbell/libvirt,novel/fbsd-libvirt,warewolf/libvirt,dumbbell/libvirt,bjzhang/libvirt,soulxu/libvirt-xuhj,agx/libvirt,novel/fbsd-libvirt,siboulet/libvirt-openvz,VenkatDatta/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,leilihh/libvirt,elmarco/libvirt,trainstack/libvirt,emaste/libvirt,taget/libvirt,bjzhang/libvirt,olafhering/libvirt,cbosdo/libvirt,elmarco/libvirt,fabianfreyer/libvirt,zhlcindy/libvirt-1.1.4-maintain,usc-isi/libvirt,eskultety/libvirt,foomango/libvirt,zippy2/libvirt,libvirt/libvirt,elmarco/libvirt,olafhering/libvirt,jeckersb/libvirt,zippy2/libvirt,jardasgit/libvirt,rlaager/libvirt,jardasgit/libvirt,foomango/libvirt,shugaoye/libvirt,danwent/libvirt-ovs,zhlcindy/libvirt-1.1.4-maintain,wiedi/libvirt,dumbbell/libvirt,kantai/libvirt-vfork,novel/fbsd-libvirt,taget/libvirt,datto/libvirt,trainstack/libvirt,kantai/libvirt-vfork,andreabolognani/libvirt,danwent/libvirt-ovs,zippy2/libvirt,jfehlig/libvirt,leilihh/libvirt,andreabolognani/libvirt,kantai/libvirt-vfork,novel/fbsd-libvirt,trainstack/libvirt,soulxu/libvirt-xuhj,soulxu/libvirt-xuhj,eskultety/libvirt,rmarwaha/libvirt1,fabianfreyer/libvirt,iam-TJ/libvirt,taget/libvirt,warewolf/libvirt,foomango/libvirt,nertpinx/libvirt,zhlcindy/libvirt-1.1.4-maintain,iam-TJ/libvirt,trainstack/libvirt,crobinso/libvirt,elmarco/libvirt,novel/fbsd-libvirt,danwent/libvirt-ovs,rmarwaha/libvirt,rmarwaha/libvirt,dumbbell/libvirt,jeckersb/libvirt,cbosdo/libvirt,leilihh/libvirt,bjzhang/libvirt,iam-TJ/libvirt,emaste/libvirt,wiedi/libvirt,VenkatDatta/libvirt,warewolf/libvirt,rmarwaha/libvirt1,VenkatDatta/libvirt,datto/libvirt,olafhering/libvirt,jardasgit/libvirt,andreabolognani/libvirt,iam-TJ/libvirt,iam-TJ/libvirt,rmarwaha/libvirt1,rmarwaha/libvirt1,leilihh/libvirt,leilihh/libvirt,jeckersb/libvirt,agx/libvirt,libvirt/libvirt,elmarco/libvirt,rmarwaha/libvirt1,foomango/libvirt,jeckersb/libvirt,iam-TJ/libvirt,wiedi/libvirt,VenkatDatta/libvirt,emaste/libvirt,eskultety/libvirt,nertpinx/libvirt,datto/libvirt,shugaoye/libvirt,fabianfreyer/libvirt,taget/libvirt,zippy2/libvirt,nertpinx/libvirt,libvirt/libvirt,siboulet/libvirt-openvz,emaste/libvirt,cbosdo/libvirt,shugaoye/libvirt,taget/libvirt,novel/fbsd-libvirt,libvirt/libvirt,warewolf/libvirt,rmarwaha/libvirt1,emaste/libvirt,usc-isi/libvirt,cbosdo/libvirt,nertpinx/libvirt,foomango/libvirt,leilihh/libvirt,novel/fbsd-libvirt,danwent/libvirt-ovs,warewolf/libvirt,jardasgit/libvirt,siboulet/libvirt-openvz,usc-isi/libvirt,kantai/libvirt-vfork,agx/libvirt,eskultety/libvirt,danwent/libvirt-ovs,bjzhang/libvirt,crobinso/libvirt