Switch armv7 setting to arm_version=7 in v8 gyp files

Makefile

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 120 matching lines @@
 # i18nsupport=off
 ifeq ($(i18nsupport), off)
   GYPFLAGS += -Dv8_enable_i18n_support=0
   TESTFLAGS += --noi18n
 endif
 # deprecation_warnings=on
 ifeq ($(deprecationwarnings), on)
   GYPFLAGS += -Dv8_deprecation_warnings=1
 endif 
 # arm specific flags.
-# armv7=false/true
+# arm_version=<number | "default">
+ifneq ($(strip $(arm_version)),)
+  GYPFLAGS += -Darm_version=$(arm_version)
+else
+# Deprecated (use arm_version instead): armv7=false/true
 ifeq ($(armv7), false)
-  GYPFLAGS += -Darmv7=0
+  GYPFLAGS += -Darm_version=6
 else
 ifeq ($(armv7), true)
-  GYPFLAGS += -Darmv7=1
+  GYPFLAGS += -Darm_version=7
+endif
 endif
 endif
 # vfp2=off. Deprecated, use armfpu=
 # vfp3=off. Deprecated, use armfpu=
 ifeq ($(vfp3), off)
   GYPFLAGS += -Darm_fpu=vfp
 endif
 # hardfp=on/off. Deprecated, use armfloatabi
 ifeq ($(hardfp),on)
   GYPFLAGS += -Darm_float_abi=hard
@@ skipping 276 matching lines @@
         @$(OUTDIR)/ia32.release/d8 --dump-heap-constants >> $(DUMP_FILE)
 
 # Dependencies.
 # Remember to keep these in sync with the DEPS file.
 dependencies:
         svn checkout --force http://gyp.googlecode.com/svn/trunk build/gyp \
             --revision 1685
         svn checkout --force \
             https://src.chromium.org/chrome/trunk/deps/third_party/icu46 \
             third_party/icu --revision 214189