Merge experimental/a64 to bleeding_edge.

build/standalone.gypi

Index: build/standalone.gypi
diff --git a/build/standalone.gypi b/build/standalone.gypi
index bcfce39ada9e57b18c3d3b366819c1f5f34a8300..cae63fe7ac58eb691dbc9f2d356bc969234647cb 100644
--- a/build/standalone.gypi
+++ b/build/standalone.gypi
@@ -52,7 +52,11 @@
               # to gyp.
               'host_arch%':
                 '<!(uname -m | sed -e "s/i.86/ia32/;\
-                  s/x86_64/x64/;s/amd64/x64/;s/arm.*/arm/;s/mips.*/mipsel/")',
+                                       s/x86_64/x64/;\
+                                       s/amd64/x64/;\
+                                       s/aarch64/a64/;\
+                                       s/arm.*/arm/;\
+                                       s/mips.*/mipsel/")',
             }, {
               # OS!="linux" and OS!="freebsd" and OS!="openbsd" and
               # OS!="netbsd" and OS!="mac"
@@ -97,6 +101,7 @@
 
     'conditions': [
       ['(v8_target_arch=="arm" and host_arch!="arm") or \
+        (v8_target_arch=="a64" and host_arch!="a64") or \
         (v8_target_arch=="mipsel" and host_arch!="mipsel") or \
         (v8_target_arch=="x64" and host_arch!="x64") or \
         (OS=="android" or OS=="qnx")', {