Instruction set features for ARM64, MIPS and X86.

Also, refactor how feature strings are handled so they are additive or
subtractive.
Make MIPS have features for FPU 32-bit and MIPS v2. Use in the quick compiler
rather than #ifdefs that wouldn't have worked in cross-compilation.
Add SIMD features for x86/x86-64 proposed in:
  https://android-review.googlesource.com/#/c/112370/

Bug: 18056890

Change-Id: Ic88ff84a714926bd277beb74a430c5c7d5ed7666
diff --git a/runtime/elf_file.cc b/runtime/elf_file.cc
index b6cf921..37c5f9c 100644
--- a/runtime/elf_file.cc
+++ b/runtime/elf_file.cc
@@ -20,6 +20,7 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#include "arch/instruction_set.h"
 #include "base/logging.h"
 #include "base/stringprintf.h"
 #include "base/stl_util.h"
@@ -29,7 +30,6 @@
 #include "elf_utils.h"
 #include "leb128.h"
 #include "utils.h"
-#include "instruction_set.h"
 
 namespace art {