ezDB

Based on ezSQL by Justin Vincent.

Release Notes:

* Oracle8_9 class renamed to just oracle
* Updated init() function to be dynamic, instead of hard-coding mysql/mysqli/oracle, etc. To add a DB connector type, just create:

    ezdb_TYPE.class.php

    Then call as:

    DB::init(TYPE);

* Added DB::set_error_handler($function) - pass in a function to call when there's an error
  Same parameters as: http://us.php.net/manual/en/function.call-user-func-array.php
  
  This will be called if DB::$log_errors is true:
  
  DB::set_log_errors(true);
  
  An alternative to try/catch, as this works through every function called in the static class
  
  It passes one argument to it, which is an array containing debug information.
  i.e.
  function db_error($debug_info) { ... }
  
  $debug info will be an array with:
  
  $debug_info = array(
		'backtrace' => $backtrace,
		'sql' => self::$last_query,
		'error' => self::$error,
		'errno' => self::$errno,
		'dbuser' => self::$dbuser,
		'dbname' => self::$dbname,
		'dbpass' => self::$dbpass,
		'dbserver' => self::$dbserver,
	);