Remove redundant filename self-references inside files.

Filenames are brittle across renames and add no useful information.

libavcodec/arm/simple_idct_arm.S

 /*
- * simple_idct_arm.S
  * Copyright (C) 2002 Frederic 'dilb' Boulay
  *
  * Author: Frederic Boulay <dilb@handhelds.org>

libavcodec/jfdctfst.c

 /*
- * jfdctfst.c
- *
  * This file is part of the Independent JPEG Group's software.
  *
  * The authors make NO WARRANTY or representation, either express or implied,

libavcodec/jfdctint_template.c

 /*
- * jfdctint.c
- *
  * This file is part of the Independent JPEG Group's software.
  *
  * The authors make NO WARRANTY or representation, either express or implied,

libavcodec/jrevdct.c

 /*
- * jrevdct.c
- *
  * This file is part of the Independent JPEG Group's software.
  *
  * The authors make NO WARRANTY or representation, either express or implied,

libavcodec/libdirac.h

@@ -20,7 +20,7 @@
 
 /**
 * @file
-* data structures common to libdiracenc.c and libdiracdec.c
+* data structures common to libdirac encoder and decoder
 */
 
 #ifndef AVCODEC_LIBDIRAC_H

libavcodec/libschroedinger.c

@@ -20,7 +20,7 @@
 
 /**
 * @file
-* function definitions common to libschroedingerdec.c and libschroedingerenc.c
+* function definitions common to libschroedinger decoder and encoder
 */
 
 #include "libdirac_libschro.h"

libavcodec/libschroedinger.h

@@ -20,7 +20,7 @@
 
 /**
 * @file
-* data structures common to libschroedingerdec.c and libschroedingerenc.c
+* data structures common to libschroedinger decoder and encoder
 */
 
 #ifndef AVCODEC_LIBSCHROEDINGER_H

libavcodec/x86/idct_mmx.c

 /*
- * idct_mmx.c
  * Copyright (C) 1999-2001 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
  *
  * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.