[BUGFIX] Remove duplicate hsc() for title tag at login

htmlspecialchars() is called twice for the title tag
at the backend login page.
Once in typo3/index.php (which is removed with
this change) and one time in t3lib_pagerenderer when
filling the TITLE marker.

Change-Id: Ibc1f78ebab51d6aae4f74a802de34c0f8e1a9ac3
Reviewed-on: http://review.typo3.org/3718
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel

typo3/index.php

@@ -211,7 +211,7 @@ function main()	{
 		}
 
 			// Starting page:
-		$this->content .= $TBE_TEMPLATE->startPage('TYPO3 Login: ' . htmlspecialchars($TYPO3_CONF_VARS['SYS']['sitename']), FALSE);
+		$this->content .= $TBE_TEMPLATE->startPage('TYPO3 Login: ' . $TYPO3_CONF_VARS['SYS']['sitename'], FALSE);
 
 			// Add login form:
 		$this->content.=$this->wrapLoginForm($loginForm);