Merge branch '4.1' of git.unl.edu:iim/UNL_Search into 4.1

lib/docs/UNL_Cache_Lite/docs/technical

-Technical choices for Cache_Lite...
------------------------------------
-
-To begin, the main goals of Cache_Lite :
-- performances
-- safe use (even on very high traffic or with NFS (file locking doesn't work
-            with NFS))
-- flexibility (can be used by the end user or as a part of a larger script)
-
-
-For speed reasons, it has been decided to focus on the file container (the 
-faster one). So, cache is only stored in files. The class is optimized for that. 
-If you want to use a different cache container, have a look to PEAR/Cache.
-
-For speed reasons too, the class 'Cache_Lite' has do be independant (so no 
-'require_once' at all in 'Cache_Lite.php'). But, a conditional include_once
-is allowed. For example, when an error is detected, the class include dynamicaly
-the PEAR base class 'PEAR.php' to be able to use PEAR::raiseError(). But, in
-most cases, PEAR.php isn't included.
-
-For the second goal (safe use), there is three (optional) mecanisms :
-- File Locking : seems to work fine (but not with distributed file system
-                 like NFS...)
-- WriteControl : the cache is read and compared just after being stored
-                 (efficient but not perfect)
-- ReadControl : a control key (crc32(), md5() ou strlen()) is embeded is the 
-                cache file and compared just after reading (the most efficient
-                but the slowest)

lib/docs/UNL_DWT/docs/examples/example.ini

-[UNL_DWT]
-dwt_location    = /Users/bbieber/Documents/workspace/UNL_Search/trunk/lib/docs/UNL_DWT/docs/examples/
-class_location  = /Users/bbieber/Documents/workspace/UNL_Search/trunk/lib/docs/UNL_DWT/docs/examples/
-tpl_location	= /Users/bbieber/Documents/workspace/UNL_Search/trunk/lib/docs/UNL_DWT/docs/examples/
-class_prefix    = UNL_DWT_
\ No newline at end of file