Added get_dir_file_info(), get_file_info(), and get_mime_by_extension() to the File Helper.

Changed ( ! condition) into (! condition) within the code
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index 4eff97f..46ba1d0 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -150,7 +150,7 @@
 	 */	

 	function trans_begin($test_mode = FALSE)

 	{

-		if ( ! $this->trans_enabled)

+		if (! $this->trans_enabled)

 		{

 			return TRUE;

 		}

@@ -179,7 +179,7 @@
 	 */	

 	function trans_commit()

 	{

-		if ( ! $this->trans_enabled)

+		if (! $this->trans_enabled)

 		{

 			return TRUE;

 		}

@@ -203,7 +203,7 @@
 	 */	

 	function trans_rollback()

 	{

-		if ( ! $this->trans_enabled)

+		if (! $this->trans_enabled)

 		{

 			return TRUE;

 		}