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

[Christophe Lyon]

Hi,

We have just committed backports of the following revisions from trunk
to linaro/gcc-4_8-branch:

r201636 (as 202175)
r201501 (as 202176) (should have picked it up by 4.8 branch merge)
r201341 (as 202181)


Thanks,

Christophe.