Globally rename the header inclusion guard names.

Consistently apply this rule: the guard name is obtained from the
filename by stripping the leading "lib", converting '/' and '.'  to
'_' and uppercasing the resulting name. Guard names in the root
directory have to be prefixed by "FFMPEG_".

Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/raw.h

@@ -24,8 +24,8 @@
  * Raw Video Codec
  */
 
-#ifndef FFMPEG_RAW_H
-#define FFMPEG_RAW_H
+#ifndef AVCODEC_RAW_H
+#define AVCODEC_RAW_H
 
 #include "avcodec.h"
 
@@ -36,4 +36,4 @@ typedef struct PixelFormatTag {
 
 extern const PixelFormatTag ff_raw_pixelFormatTags[];
 
-#endif /* FFMPEG_RAW_H */
+#endif /* AVCODEC_RAW_H */