Revert of Switch SkJpegCode to libjpeg-turbo

Revert of Switch SkJpegCode to libjpeg-turbo (patchset #25 id:680001 of https://codereview.chromium.org/1180983002/)

Reason for revert:
yasm is leaking memory :(.

https://uberchromegw.corp.google.com/i/client.skia/builders/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-ASAN/builds/926/steps/build%20dm/logs/stdio

Original issue's description:
> 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

TBR=scroggo@google.com,djsollen@google.com,emmaleer@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Committed: https://skia.googlesource.com/skia/+/f657b1093ef22390d3ce1eb56686a8185408a84f

[msarett, 2015-06-29 17:30:34]

Created Revert of Switch SkJpegCode to libjpeg-turbo

[commit-bot: I haz the power, 2015-06-29 17:30:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1214023003/1

[commit-bot: I haz the power, 2015-06-29 17:31:02]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/f657b1093ef22390d3ce1eb56686a8185408a84f