allow name for VSH_OT_ARGV options
allow name for VSH_OT_ARGV options

A name will improve the usege, example

# virsh help echo
  NAME
    echo - echo arguments

  SYNOPSIS
    echo [--shell] [--xml] [<string>]...

  DESCRIPTION
    Echo back arguments, possibly with quoting.

  OPTIONS
    --shell          escape for shell use
    --xml            escape for XML use
    <string>         arguments to echo

"[<string>]..." is added to SYNOPSIS.
"<string>         arguments to echo" is added to OPTIONS.

Signed-off-by: Lai Jiangshan <4c9eb49378914b743bdd32292c04df29b820d73e@cn.fujitsu.com>

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