Add libjpeg-turbo library (depends on yasm)
Mangle external function names to avoid conflict with libjpeg
Take advantage of direct color conversion (RGBA, BGRA, 565)
Prepare to use jpeg_skip_scanlines (when it is upstreamed)
BUG=skia:
Committed: https://skia.googlesource.com/skia/+/
b60c3f8291529303299262dba19b1a896060bd2d
Committed: https://skia.googlesource.com/skia/+/
f8bf9181d7b0463c8e371755cfbb9ece90b34fc5
Committed: https://skia.googlesource.com/skia/+/
e9e3ee33f30c14c31afd5fc3fe4dda7f15783c75
Review URL: https://codereview.chromium.org/
1180983002