Rename 5 SVG text tests to reflect that they are for selection.

LayoutTests/svg/text/text-selection-text-05-t.svg

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- =====================================================================-->
 <!--                                                                      -->
 <!-- text-text-05-t.svg                                                 -->
 <!--                                                                      -->
 <!-- Tests that the viewer can handle the rotate attribute on the text    -->
 <!-- element.                                                             -->
 <!--                                                                      -->
 <!-- Author : Vincent Hardy,  06-Jan-2004                                 --><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Tiny//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-tiny.dtd">
 
@@ skipping 150 matching lines @@
     
 <script>
 if (window.testRunner)
     testRunner.dumpSelectionRect();
 
 function repaintTest() {
     document.execCommand("SelectAll");
 }
 </script>
 </svg>