Merge lp://staging/~chtsanti/squid/connection_pinning into lp://staging/squid/v4

Unmerged revisions

9006. By Christos Tsantilas on 2008-09-29

The ConnStateData::pinnedAuth should return bool

9005. By Christos Tsantilas on 2008-09-29

- Convert the http_port parameter no-connection-auth to
connection-auth=[on|off].
- Also this parameter was not actually working

9004. By Christos Tsantilas on 2008-09-29

emove the methods ConnStateData::getPinnedInfo and
ConnStateData::getPinnedConnection and replace them with:
- validatePinnedConnection which checks if the pinning info is valid and
if not, remove any pinning info and closes the pinning peer,
- unpinConnection which removes any pinning info
- pinnedPeer which returns the pinning peer
- pinnedAuth which returns true if the pinned connewction is a web
server authenticated connection

9003. By Christos Tsantilas on 2008-09-29

- Convert the clientPinnedConnectionClosed close handler to the
ConnStateData::clientPinnedConnectionClosed comm call
- Add the ConnStateData::pinning::closeHandler which holds the comm call
close handler of pinning.fd to allow as cancel its execution if required

9002. By Christos Tsantilas on 2008-09-29

Document the HttpRequest::pinned_connection member

9001. By Christos Tsantilas on 2008-09-25

- Move cleanup of pinning data from ConnStateData destructor to swanSong

- convert some debug to debugs statements

- Add the setPinnedConnection, pinnedConnection and
releasePinnedConnection methods to the HttpRequest class and use them to
set/get/release pinned data instead of directly access the related class
members

- cbdataReferenceDone also sets sto NULL the cbdata so there is not any
reason for the somecbdata=NULL statements used

- Add the virtual method inheritProperties in HttpMsg and implement it
for HttpReply and HttpRequest and remove the
inheritVirginReplyProperties and inheritVirginProperties from
IcapModXact class

- rename the http_port_list::no_connection_auth and
request_flags::no_connection_auth tp *::connection_auth_disable

- Polish documentation about Connection:Proxy-Support header

- Other minor fixes

9000. By Christos Tsantilas on 2008-09-20

Add some documentation about Proxy-Support headers

8999. By Christos Tsantilas on 2008-09-20

Print info about connection pinning in dump_peer_options

8998. By Christos Tsantilas on 2008-09-20

Merge from trunk

8997. By Christos Tsantilas on 2008-09-14

merge from trunk