re PR sanitizer/59009 (libsanitizer merge from upstream r191666 breaks bootstrap on powerpc64-linux and aarch64-linux)

2015-03-23  Christophe Lyon  <christophe.lyon@linaro.org>

	PR sanitizer/59009
	* sanitizer_common/sanitizer_platform_limits_posix.cc: Cherry pick
	upstream r230324.
	* sanitizer_common/sanitizer_platform.h: Likewise.
	* sanitizer_common/sanitizer_common_syscalls.inc: Likewise.

From-SVN: r221593