Bump libavfilter minor version and add APIchanges entry after the

addition of the AVFilterPicRef.pos field.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@22508 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

doc/APIchanges

@@ -12,6 +12,9 @@ libavutil:   2009-03-08
 
 API changes, most recent first:
 
+2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos
+  Add AVFilterPicRef.pos field.
+
 2010-03-13 - r22501 - lavu 50.12.0 - error.h
   Move error code definitions from libavcodec/avcodec.h to
   the new public header libavutil/error.h.

libavfilter/avfilter.h

@@ -25,7 +25,7 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVFILTER_VERSION_MAJOR  1
-#define LIBAVFILTER_VERSION_MINOR 17
+#define LIBAVFILTER_VERSION_MINOR 18
 #define LIBAVFILTER_VERSION_MICRO  0
 
 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \