Updated media list in introduction comment

test/libburner.c

@@ -8,8 +8,8 @@
   
   libburner is a minimal demo application for the library libburn as provided
   on  http://libburnia.pykix.org . It can list the available devices, can
-  blank a CD-RW or DVD-RW, can format a DVD-RW, and can burn to CD-R, CD-RW,
-  DVD+RW, DVD-RAM or DVD-RW. Not supported yet: DVD+R [DL].
+  blank a CD-RW or DVD-RW, can format a DVD-RW, can burn to CD-R, CD-RW, DVD-R,
+  DVD+R, DVD+RW, DVD-RAM or DVD-RW. Not supported yet: double layer media.
 
   It's main purpose, nevertheless, is to show you how to use libburn and also
   to serve the libburnia team as reference application. libburner.c does indeed