Epic Battle and substantial speed ups with Skia on 4.6

[Zach Pfeffer]

After an epic battle the tips of each Android build are ready to be released.

Of special note is Bernhard's contribution which not only landed many
patches to fix strict-aliasing issues in the code but pushed 3
changes:

skia: Add -ffast-math, -flto
http://review.android.git.linaro.org/#change,773

opengl: Enable -flto and -ffast-math
http://review.android.git.linaro.org/#change,774

and:

iMX53: Switch to kernel 3.1
http://review.android.git.linaro.org/#change,777

...after sorting a couple of config options that weren't correct:

<bero> -CONFIG_PAGE_OFFSET=0xC0000000 works!
<bero> +CONFIG_PAGE_OFFSET=0x80000000 broken

<bero> -CONFIG_VMSPLIT_3G=y works!
<bero> +CONFIG_VMSPLIT_2G=y broken

The first 2 changes have a fairly dramatic effect on the builds,
making them work much better and smoothly. Although the new iMX53
build based on the 3.1 kernel needs some work, getting over this hump
is a major achievement.

Here are all the tip builds. Each has been verified.

https://android-build.linaro.org/builds/~linaro-android/staging-imx53/#build=35
on iMX53 (3.1)
https://android-build.linaro.org/builds/~linaro-android/staging-imx53/#build=34
on iMX53 (2.6.38) <- RC off of this
https://android-build.linaro.org/builds/~linaro-android/panda/#build=351
on 4460 and 4430
https://android-build.linaro.org/builds/~linaro-android/staging-panda/#build=59
on 4460 and 4430
https://android-build.linaro.org/builds/~linaro-android/staging-origen/#build=37
on origen
https://android-build.linaro.org/builds/~linaro-android/landing-snowball/#build=35
on snowball
https://android-build.linaro.org/builds/~linaro-android/beagle/#build=319
on beagle_xM and beagle
https://android-build.linaro.org/builds/~linaro-android/staging-snowball/#build=41
snowball
https://android-build.linaro.org/builds/~linaro-android/tracking-panda/#build=25
on 4460 and 4430

-- 
Zach Pfeffer
Android Platform Team Lead, Linaro Platform Teams
Linaro.org | Open source software for ARM SoCs
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