Cleanup of function compare() [name changed]

Name changed from strcompare() to compare().

Fix of ft_pagesorter() function in "fulltext.php".
ft_pagesorter() is used by _ft_pageLookup(), which is used by ft_pageLookup().

Functions that call ft_pageLookup() and now have the expected results:
Action\Search.php:69, execute(): run the search
Ajax.php:50, callQsearch(): Searches for matching pagenames
Ajax.php:352, callLinkwiz(): List matching namespaces and pages for the link wizard

Screens fixed:
- Search (list of matching pagenames)
- Quick search (when typing)
- Internal link suggestion when editing a page (when nothing was typed)

Fix of menuSort() function in "Ui/Admin.php".

Screens fixed:
- Administration

Fix of sort_search_fulltext() function in "search.php".
This function does not seem to be used anywhere.

inc/Ui/Admin.php

@@ -159,7 +159,7 @@ class Admin extends Ui {
      * @return int
      */
     protected function menuSort($a, $b) {
-        $strcmp = strcompare($a['prompt'], $b['prompt']);
+        $strcmp = compare($a['prompt'], $b['prompt']);
         if($strcmp != 0) return $strcmp;
         if($a['sort'] === $b['sort']) return 0;
         return ($a['sort'] < $b['sort']) ? -1 : 1;

inc/fulltext.php

@@ -370,7 +370,7 @@ function ft_pagesorter($a, $b){
     }elseif($ac > $bc){
         return 1;
     }
-    return strcompare($a,$b);
+    return compare($a,$b);
 }
 
 /**

inc/search.php

@@ -368,7 +368,7 @@ function sort_search_fulltext($a,$b){
     }elseif($a['count'] < $b['count']){
         return 1;
     }else{
-        return strcompare($a['id'],$b['id']);
+        return compare($a['id'],$b['id']);
     }
 }
 

inc/sort.php

@@ -59,14 +59,14 @@ function _sort_filenames_without_collator($first, $second) {
  * Replacement for strcmp() in search.php, line 371, where all string would be lowercase (function not used anywhere).
  * Replacement for strcasecmp() in Ui/Admin.php, line 162.
  */
-function strcompare($first, $second){
+function compare($first, $second) {
     global $collator;
     _init_collator();
 
-    if(!isset($collator))
-        return strcasecmp($first, $second);
-    else
+    if (isset($collator))
         return $collator->compare($first, $second);
+    else
+        return strcasecmp($first, $second);
 }
 
 /**