[linaro/gcc-4_8-branch] Backports from trunk and merge from gcc-4_8-branch

[Christophe Lyon]

Hi,

I have just backported the following revisions from to linaro/gcc-4_8-branch:
r198970 (as r199696),
r199241 (as r199700),
r198497-198500 (as r199703),
r198680 (as r199710),
r198928,198973,199203 (as r199718)

I have also merged the gcc-4_8-branch into linaro/gcc-4_8-branch up to
revision r199609 (as r199719).

Thanks,

Christophe.