Change-Id: Ic0220f6f3ecdc1c15ba3f93f3ef2b435c0f99b98

Adds multiple filters in the 0.5-1.0 range in the last stage
of the resize functions to prevent over-smoothing/aliasing

Change-Id: I1a615adb16f0df5095790945c94b28b4d6a6fc48

Change-Id: I7739849aa8dd5dcb0755858367fd3223587d107f

Adds an arbitrary-size resize library for use in scaling of input
frames in a non-normative manner in the vp9 encoder. The method
used is as follows:
Downsampling - Uses a 8 tap filter for factor of 2 decimation upto
a size just higher than the desired size. Then interpolates pixels
at a precision of 1/32 pel using a set of 8-tap filters.
Upsampling - Interpolates pixels at a precision of 1/32 pel using
a set of 8-tap filters.

There is no assembly optimization yet.

Change-Id: Ib5b81e174fc139da322bb97c8214d52289d60d8a