Summary: Merge in external acl refactoring and tagged delay pools.

Summary: Merge in external acl refactoring and tagged delay pools.
Keywords:

Patches applied:

  * robertc@squid-cache.org--squid/squid--tagged-pools--3.0--patch-5
     Enable class 5 pools.

  * robertc@squid-cache.org--squid/squid--tagged-pools--3.0--patch-4
     Implement tag associated delay pools.

  * robertc@squid-cache.org--squid/squid--tagged-pools--3.0--patch-3
     Refactoring external acl.

  * robertc@squid-cache.org--squid/squid--tagged-pools--3.0--patch-2
     Extract ExternalACLState to separate files.

  * robertc@squid-cache.org--squid/squid--tagged-pools--3.0--patch-1
     Create a tagging method for external acl replies.

  * robertc@squid-cache.org--squid/squid--tagged-pools--3.0--base-0
     tag of robertc@squid-cache.org--squid/squid--HEAD--3.0--patch-171