Correct regex file name matching as per Måns' suggestion

Originally committed as revision 14876 to svn://svn.ffmpeg.org/ffmpeg/trunk

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@@ -108,7 +108,7 @@ Codecs:
   8bps.c                                Roberto Togni
   8svx.c                                Jaikrishnan Menon
   aasc.c                                Kostya Shishkov
-  aac.(c|h), aactab.(c|h), aacdectab.h  Robert Swain
+  aac.[ch], aactab.[ch], aacdectab.h    Robert Swain
   ac3*                                  Justin Ruggles
   alacenc.c                             Jaikrishnan Menon
   apedec.c                              Kostya Shishkov