Fix setjmp()/longjmp() to save FP registers on ARMv7.

Change-Id: I8ec684c8f8ca1ae58c8feb330b97d1e2b81caeef
Merge commit '68b5f556710909d292b5b285ee2c5e4d30e6476e' into oxygen_4.3

* commit '68b5f556710909d292b5b285ee2c5e4d30e6476e':
  Fix setjmp()/longjmp() to save FP registers on ARMv7.