libvpx: Add VP9 decoder.

source/libvpx/args.h

Index: source/libvpx/args.h
===================================================================
--- source/libvpx/args.h	(revision 172621)
+++ source/libvpx/args.h	(working copy)
@@ -13,29 +13,26 @@
 #define ARGS_H
 #include <stdio.h>
 
-struct arg
-{
-    char                 **argv;
-    const char            *name;
-    const char            *val;
-    unsigned int           argv_step;
-    const struct arg_def  *def;
+struct arg {
+  char                 **argv;
+  const char            *name;
+  const char            *val;
+  unsigned int           argv_step;
+  const struct arg_def  *def;
 };
 
-struct arg_enum_list
-{
-    const char *name;
-    int         val;
+struct arg_enum_list {
+  const char *name;
+  int         val;
 };
 #define ARG_ENUM_LIST_END {0}
 
-typedef struct arg_def
-{
-    const char *short_name;
-    const char *long_name;
-    int         has_val;
-    const char *desc;
-    const struct arg_enum_list *enums;
+typedef struct arg_def {
+  const char *short_name;
+  const char *long_name;
+  int         has_val;
+  const char *desc;
+  const struct arg_enum_list *enums;
 } arg_def_t;
 #define ARG_DEF(s,l,v,d) {s,l,v,d, NULL}
 #define ARG_DEF_ENUM(s,l,v,d,e) {s,l,v,d,e}