[PATCH] [Sanitizer][MIPS] internal_stat for mips64

[Alexey Samsonov]

================
Comment at: lib/sanitizer_common/sanitizer_linux.cc:40
@@ +39,3 @@
+
+// For mips64, stat syscall fills buffer in the format of kernel_stat
+// structure kernel_stat is defined as stat in asm/stat.h
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http://reviews.llvm.org/D6385