philipel 2cb73413f4 Moved sequence number specific operations from mod_ops.h
to sequence_number_util.h

Also in this CL:
  - Implemented a MinDiff function which finds the smallest diff of two
    wrapping numbers.
  - Implemented comparators for sequence numbers.

BUG=
R=mflodman@webrtc.org, tommi@webrtc.org, torbjorng@webrtc.org

Review URL: https://codereview.webrtc.org/1814753002 .

Cr-Commit-Position: refs/heads/master@{#12083}
2016-03-22 09:03:55 +00:00
..
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