Fix error output leaking into test output.

Returnning true from an error handler indicates to PHP that your error
handler has handled the error and native error handling is not required.

lib/Cake/Error/BaseErrorHandler.php

@@ -110,7 +110,7 @@ public function handleError($code, $description, $file = null, $line = null, $co
 		}
 		$this->_displayError($data, $debug);
 		$this->_logError($log, $data);
-		return false;
+		return true;
 	}
 
 /**
@@ -170,7 +170,7 @@ public function handleFatalError($code, $description, $file, $line) {
 		} else {
 			$this->handleException(new InternalErrorException());
 		}
-		return false;
+		return true;
 	}
 
 /**

lib/Cake/Test/TestCase/Error/ErrorHandlerTest.php

@@ -1,7 +1,5 @@
 <?php
 /**
- * ErrorHandlerTest file
- *
  * PHP 5
  *
  * CakePHP(tm) Tests <http://book.cakephp.org/2.0/en/development/testing.html>
@@ -306,15 +304,15 @@ public function testHandleFatalErrorPage() {
 	}
 
 /**
- * test handleException generating log.
+ * test handleFatalError generating log.
  *
  * @return void
  */
 	public function testHandleFatalErrorLog() {
 		$this->_logger->expects($this->at(0))
 			->method('write')
 			->with('error', $this->logicalAnd(
-				$this->stringContains(__FILE__ . ', line 327'),
+				$this->stringContains(__FILE__ . ', line ' . (__LINE__ + 10)),
 				$this->stringContains('Fatal Error (1)'),
 				$this->stringContains('Something wrong')
 			));