- Newer autoconfs get confused by code snippets that consist only
  of comments.
- Use AS_HELP_STRING to format help messages.

signed-off-by: pth@suse.de

Index: m4/ax_have_qt.m4
===================================================================
--- m4/ax_have_qt.m4.orig	2012-11-14 09:52:14.000000000 +0100
+++ m4/ax_have_qt.m4	2012-12-07 23:34:57.388720186 +0100
@@ -498,7 +498,6 @@
               # We can link with no special library directory.
               ax_qt_lib_dir=
             ], [
-             : # Leave ax_qt_lib_dir defined
             ])
           ])
         ])