shithub: libvpx

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ref: 57e995ff9c01d8c09af50439c8c88876a234d205
parent: 5f2e8449b7247bf110dbacc2cacb9ce0a16bbe30
author: Jingning Han <jingning@google.com>
date: Fri Feb 8 11:19:42 EST 2013

butterfly inverse 4x4 ADST

fixed format issues.

Implement the inverse 4x4 ADST using 9 multiplications. For this
particular dimension, the original ADST transform can be
factorized into simpler operations, hence is retained.

Change-Id: Ie5d9749942468df299ab74e90d92cd899569e960