Varnish module collection

 This is a collection of modules ("vmods") extending Varnish VCL used
 for describing HTTP request/response policies with additional
 capabilities. Included:
 .
  * Simpler handling of HTTP cookies
  * Variable support
  * Request and bandwidth throttling
  * Modify and change complex HTTP headers
  * 3.0-style saint mode
  * Advanced cache invalidations, and more.
 .
 This collection contains the following vmods: cookie, vsthrottle,
 header, saintmode, softpurge, tcp, var, xkey