libvpx: Pull from upstream

source/libvpx/configure

Index: source/libvpx/configure
===================================================================
--- source/libvpx/configure	(revision 284462)
+++ source/libvpx/configure	(working copy)
@@ -26,6 +26,7 @@
   ${toggle_unit_tests}            unit tests
   ${toggle_decode_perf_tests}     build decoder perf tests with unit tests
   --libc=PATH                     path to alternate libc
+  --size-limit=WxH                max size to allow in the decoder
   --as={yasm|nasm|auto}           use specified assembler [auto, yasm preferred]
   --sdk-path=PATH                 path to root of sdk (android builds only)
   ${toggle_fast_unaligned}        don't use unaligned accesses, even when
@@ -327,6 +328,7 @@
     multi_res_encoding
     temporal_denoising
     experimental
+    size_limit
     ${EXPERIMENT_LIST}
 "
 CMDLINE_SELECT="
@@ -352,6 +354,7 @@
     docs
     libc
     as
+    size_limit
     fast_unaligned
     codec_srcs
     debug_libs