cedarv: build error. qobj property
cedarv: fix wrong alignment
cedarv: more error messages, code style etc.
cedarv: nv12 support

yuv420p color is wrong some times. nv12+neon+opengl crash
qmake: add simd compilers
cedarv: add yuv copy code(neon) from libvdpau-sunxi

yv12 can not copy correctly. fallback to old one.
cedarv: fix wrong width in yv12 copy
Merge remote-tracking branch 'upstream/master'