Provides more comprehensive coverage for --enable-coefficient-checking.
The intent is to make the --enable-coefficient-checking option
consistent with the VP9 spec.
Change-Id: I12d0120756d17572ca2b2d7e6a2ab9d8071d8d58
1) copy following files from vpx_dsp/ to vp10/common/
vp10_inv_txfm.c
vp10_inv_txfm.h
vp10_inv_txfm_sse2.c
vp10_inv_txfm_sse2.h
2) change the function prefix "vpx_" to "vp10_" in above files
3) add unit test at vp10_inv_txfm_test.cc
Change-Id: I206f10f60c8b27d872c84b7482c3bb1d1cb4b913
