the buffer length is already a size_t making the offset into it limited

Change-Id: Ibc5352e69049186cc07f7d86117696b11a98a600

ne_read_ebml_lacing / ne_read_discard_padding
+ add some asserts

Change-Id: I28d0ec5c8f901ae0a35928a8f512c51b3ecf177d

in calls to ne_read_simple / ne_io_read_skip

Change-Id: I5c4fc3bb41832973830ad54248839d6a4944aae6

+ nestegg_track_codec_data
quiets uint64_t -> size_t warnings
the sizes used are previously validated against their associated LIMIT_*
values

Change-Id: Ie574a3a7496d0143bd58b778145c27f38dd6a4da

* changes:
  nestegg: packet_track: fix uint64->uint32 warning
  nestegg: fix track_scale double->uint64 warning
  nestegg: fix track_number uint64->uint32 warnings
  nestegg: add ne_get_uint32 convenience function

Change-Id: I4a54b12e5229705222c5a101258b9d1f81e2948d

Change-Id: I9423b543e1be414e5c9e10480b813f06e6b88f8a

This patch adds a new speed feature which doesn't do the rather
expensive entropy context lookup or save to the table,  while
doing costing.

The speed up on desktop36p.y4m is around 10% other clips much less.

On the RTC test set this was + 1% in overall datarate.

Change-Id: Ia5144bbf45270671e7be9c8e4055369909e2f738

This gets more accurate mode hit stats. It's also the first step to
handling ZEROMV not being allowed more intelligently.

Change-Id: I5de6734507b5177bf73e9ddbad923f218c39f3e4

Reset FAST_HEX search_method, which was lost because of code merging.

Change-Id: Ic2b2cb9ec2f1751e96f7db0f9226310f605fcc83

intra_y_mode_mask is already enforced for the sub8x8 case.
intra_uv_mode_mask is already enforced for all sizes.

Change-Id: Ia9dd14701cb49873c2e8f24eb5f8b255eaf76a1f

Clear warning caused by implied conversion from int32 to int64.

Change-Id: I473b37a54984cbfb22702eb3f712465881ff86e8

Change-Id: Ic97ddd5143425a7b63fac4e40d9740a10a0491ad

Change-Id: I5a01d0dccc9afc87e2adbb5ddc7d44379fe1f125

There is one parameter that is never used, therefore is removed.

Change-Id: I595722e7c5731534c72831315359e4dce9c21763

Two paramemters are not in use, therefore are removed.

Change-Id: I41eb601b7b4bf2feedb13b3f240315656d8694f9

Change-Id: Ia319bd924401677b5c30b0f46d1ab2be6a1f446e

Change-Id: Ie83e18802234199491dbb6e90886739814558f96

Change-Id: I111c5bd0dd47db7b1f6952c18056bee548bb42e9

Change-Id: I6d47618e8aee6e6c2fe1cf0b8bb4da0b2a0bab66