ARM NEON SIMD support for YCC-to-RGB565 conversion


git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1385 632fc199-4ca6-4c93-a231-07263d6284db
ARM64 NEON SIMD support for YCC-to-RGB565 conversion


git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1386 632fc199-4ca6-4c93-a231-07263d6284db