some accesslib deployment
ticketlib: Mark ticketlib[1] as deprecated again
ticketlib: Store tickets in session instead of database
[FIX] ticketlib: granting a ticket destroys previous one
[FIX] HTML special chars escaping

[FIX] svn property keywords in order to have the correct revision information in the heading of all files

[MOD] svn:keywords setting - adding property for keyword Id ($Id: ... $) expansion -- $Header: $ CVS keyword is obsolete, use $Id: $ instead

[MOD] SVN Migration: reorganize the directories structure of the repository after the import made by cvs2svn

(Preliminary note : This is a deep modification in tikiwiki's prefs code. Please test first and send feedback if you can)

 * Now use the $prefs array everywhere (in php files also) instead of global vars. This will :

	- allow to use prefs the same way in smarty and php ($prefs array),

	- simplify all code parts that modifiy a preference, because when a pref is modified in php's $prefs array, it is also up-to-date in smarty $prefs array (everything is passed by reference now). So, no more need to reassign values in smarty each time,

	- avoid duplication of values in memory,

	- reduce risks of errors (e.g. collision in variables names, forget to add one of the "global $prefname", ...)


 * All user prefs are now retrieved in one query at tiki-setup stage (as site prefs) and also in session vars (when sessions are used). This will :

	- reduce overhead and database queries after the first page


 * User prefs are now overriding $prefs. This will :

	- simplify the whole usage of $prefs, because only one array is used (no more need, in general, to use tikilib's functions to get user prefs),

	- set some $prefs['site_*'] (listed in the $user_overrider_prefs array of lib/setup/user_prefs.php) for some specific site prefs that needs to be accessed in php (for example when sending mails) and that could have been overrided with the corresponding user pref

Added the feature name to the "This feature is disabled" message. RFE [764198] Indicate what feature is disabled.

Trita choked on several complex .css files so I skipped those.
I also skipped all third party code, such as adodb and smarty.
If I accidentally checked in any external library, please let me know.

I've tagged the HEAD before merging with the symbolic tag: BEFORE-MERGE-release_eta_carinae_rc1

including the Directory!