libvpx: Pull from upstream

source/libvpx/third_party/nestegg/README.libvpx

Index: source/libvpx/third_party/nestegg/README.libvpx
===================================================================
--- source/libvpx/third_party/nestegg/README.libvpx	(revision 278778)
+++ source/libvpx/third_party/nestegg/README.libvpx	(working copy)
@@ -1,24 +0,0 @@
-URL: https://github.com/kinetiknz/nestegg.git
-Version: f46223191d8116a36bf299b5b9793fcb798417b1
-License: ISC-style
-License File: LICENSE
-
-Description:
-The source under the halloc/ directory is licensed under a BSD license. See
-halloc/halloc.h for details.
-
-Local Modifications:
-- delete unnecessary docs and build files
-- nestegg/0001-include-paths.diff
-  include path modifications for the libvpx build system
-- 0002-ne_read_simple-uninitialized_variable.diff
-  fixes:
-nestegg.c|975 col 6| warning: ‘r’ may be used uninitialized in this function [-Wuninitialized]
-- add ne_get_uint32 convenience function
-- fix track_number uint64->uint32 warnings
-- fix track_scale double->uint64 warning
-- nestegg_packet_track: fix uint64->uint32 warning
-- ne_read_(string|binary|block): normalize size_t usage
-- ne_parse: normalize size_t usage
-- quiet read related uint64->size_t warnings
-- ne_buffer_read: quiet uint64->size_t warning