Extensions: Add extension auto updater.

Extensions/extension.sex

@@ -0,0 +1,15 @@
+program ExtUpdater;
+{$I ..\Extensions\Updater.sei}
+
+procedure Init;
+var
+  EXT: integer;
+begin
+  Settings.GetKeyValueDef('Extensions_Visible', 'false'); //Default Menu to be hidden =)
+  AddUpdater('Extensions', 'http://wizzup.org/static/srl/exten.tar.bz2',
+  'http://wizzup.org/static/srl/exten_version', ScriptPath + {$IFDEF WINDOWS}'\' {$ELSE}'/'{$ENDIF}, True, True, EXT);
+end;
+
+function GetName: string; begin Result := 'Extensions Updater'; end;
+function GetVersion: string; begin Result := '0.1'; end;
+begin end.