Reorganize the syntax description in varnish-cli(7)
Reorganize the syntax description in varnish-cli(7)

Ramp up from simple tokens to here documents.

gquintard/Varnish-Cache,feld/Varnish-Cache,gquintard/Varnish-Cache,feld/Varnish-Cache,gquintard/Varnish-Cache,feld/Varnish-Cache,gquintard/Varnish-Cache,feld/Varnish-Cache,feld/Varnish-Cache