remove call to ConfigHandler::replacePath() when resolving autoload.ini entries.
replace is_readable() call with a silenced fopen(), which will check our include path for the file specified.

*BREAKAGE WARNING*
this means is that you must have a full path specified in autoload.ini.  "lib/blah.class.php" (to reference "/path/to/mywebapp/lib/blah.class.php") would no longer work - unless /path/to/mywebapp is in your include_path of course :)  This should only be a problem for user-provided autoload.ini entries, as the "stock" ones all reference the %AG_APP_DIR% constant to provide a full path.
Added Daniel Swarbrick's contribution to fleshing out the PDO driver.
Added optional parsing of values into true boolean values
more clean ups..
If smarty cache directory's defined, then use it
Boomshakalaka!
Lots of refactoring of tests, only 2 left failing. t00t.
Added some comments
Added sample config file
Removed hard coded carriage returns..
Corrected index.php sample for new buiz..
More cleanups and synced in changes from trunk, re: merged revs 211:226