Merge "Rectangular transforms 4x8 & 8x4" into nextgenv2

configure

vp10/common/blockd.c

vp10/common/blockd.h

vp10/common/common_data.h

vp10/common/entropy.c

vp10/common/entropy.h

vp10/common/enums.h

vp10/common/idct.c

vp10/common/idct.h

vp10/common/loopfilter.c

vp10/common/pred_common.h

vp10/common/reconintra.c

vp10/common/scan.c

vp10/common/scan.h

vp10/common/vp10_inv_txfm2d.c

vp10/common/vp10_rtcd_defs.pl

vp10/decoder/decodeframe.c

vp10/decoder/decodemv.c

vp10/decoder/detokenize.c

vp10/encoder/bitstream.c