Fix 400 bad request of varnish with nginx and apache 2.4

Update vcl from https://github.com/cosimo/varnish-accept-language
./gen_vcl.pl pt de eo es fr hy it pt ru < accept-language.c > new.vcl

(ActionItem3186)
Merge branch 'ai3186' into 'master'

Fix 400 bad request of varnish with nginx and apache 2.4

http://noosfero.org/Development/ActionItem3186

See merge request !249