Change default Android scons build to suit more modern hardware.

SConstruct

 # Copyright 2010 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 34 matching lines @@
 # TODO: Sort these issues out properly but as a temporary solution for gcc 4.4
 # on linux we need these compiler flags to avoid crashes in the v8 test suite
 # and avoid dtoa.c strict aliasing issues
 if os.environ.get('GCC_VERSION') == '44':
     GCC_EXTRA_CCFLAGS = ['-fno-tree-vrp', '-fno-strict-aliasing']
     GCC_DTOA_EXTRA_CCFLAGS = []
 else:
     GCC_EXTRA_CCFLAGS = []
     GCC_DTOA_EXTRA_CCFLAGS = []
 
-ANDROID_FLAGS = ['-march=armv5te',
-                 '-mtune=xscale',
-                 '-msoft-float',
+ANDROID_FLAGS = ['-march=armv7-a',
+                 '-mtune=cortex-a8',
+                 '-mfloat-abi=softfp',
+                 '-mfpu=vfp',
                  '-fpic',
                  '-mthumb-interwork',
                  '-funwind-tables',
                  '-fstack-protector',
                  '-fno-short-enums',
                  '-fmessage-length=0',
                  '-finline-functions',
                  '-fno-inline-functions-called-once',
                  '-fgcse-after-reload',
                  '-frerun-cse-after-loop',
                  '-frename-registers',
                  '-fomit-frame-pointer',
                  '-fno-strict-aliasing',
                  '-finline-limit=64',
+                 '-DCAN_USE_VFP_INSTRUCTIONS=1',
+                 '-DCAN_USE_ARMV7_INSTRUCTIONS=1',
                  '-MD']
 
 ANDROID_INCLUDES = [ANDROID_TOP + '/bionic/libc/arch-arm/include',
                     ANDROID_TOP + '/bionic/libc/include',
                     ANDROID_TOP + '/bionic/libstdc++/include',
                     ANDROID_TOP + '/bionic/libc/kernel/common',
                     ANDROID_TOP + '/bionic/libc/kernel/arch-arm',
                     ANDROID_TOP + '/bionic/libm/include',
                     ANDROID_TOP + '/bionic/libm/include/arch/arm',
                     ANDROID_TOP + '/bionic/libthread_db/include',
@@ skipping 1038 matching lines @@
 # version of scons.  Also, there's a bug in some revisions that
 # doesn't allow this flag to be set, so we swallow any exceptions.
 # Lovely.
 try:
   SetOption('warn', 'no-deprecated')
 except:
   pass
 
 
 Build()