Use directory name as multiple inclusion guard prefix.

We do this for all other libraries already.

Originally committed as revision 16990 to svn://svn.ffmpeg.org/ffmpeg/trunk

libpostproc/postprocess.h

@@ -18,8 +18,8 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef POSTPROCESS_POSTPROCESS_H
-#define POSTPROCESS_POSTPROCESS_H
+#ifndef POSTPROC_POSTPROCESS_H
+#define POSTPROC_POSTPROCESS_H
 
 /**
  * @file libpostproc/postprocess.h
@@ -96,4 +96,4 @@ void pp_free_context(pp_context *ppContext);
 
 #define PP_PICT_TYPE_QP2  0x00000010 ///< MPEG2 style QScale
 
-#endif /* POSTPROCESS_POSTPROCESS_H */
+#endif /* POSTPROC_POSTPROCESS_H */

libpostproc/postprocess_internal.h

@@ -23,8 +23,8 @@
  * internal api header.
  */
 
-#ifndef POSTPROCESS_POSTPROCESS_INTERNAL_H
-#define POSTPROCESS_POSTPROCESS_INTERNAL_H
+#ifndef POSTPROC_POSTPROCESS_INTERNAL_H
+#define POSTPROC_POSTPROCESS_INTERNAL_H
 
 #include <string.h>
 #include "libavutil/avutil.h"
@@ -175,4 +175,4 @@ static inline void linecpy(void *dest, const void *src, int lines, int stride) {
     }
 }
 
-#endif /* POSTPROCESS_POSTPROCESS_INTERNAL_H */
+#endif /* POSTPROC_POSTPROCESS_INTERNAL_H */