MEDIUM: rules/acl: Parse TCP/HTTP rules and acls defined in defaults sections

MEDIUM: rules/acl: Parse TCP/HTTP rules and acls defined in defaults sections

TCP and HTTP rules can now be defined in defaults sections, but only those
with a name. Because these rules may use conditions based on ACLs, ACLs can
also be defined in defaults sections.

However there are some limitations:

  * A defaults section defining TCP/HTTP rules cannot be used by a defaults
    section
  * A defaults section defining TCP/HTTP rules cannot be used bu a listen
    section
  * A defaults sections defining TCP/HTTP rules cannot be used by frontends
    and backends at the same time
  * A defaults sections defining 'tcp-request connection' or 'tcp-request
    session' rules cannot be used by backends
  * A defaults sections defining 'tcp-response content' rules cannot be used
    by frontends

The TCP request/response inspect-delay of a proxy is now inherited from the
defaults section it uses. For now, these rules are only parsed. No evaluation is
performed.