Make not sucking at regexp the default...

src/regexp-macro-assembler.cc

 // Copyright 2008 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 @@
 
 bool RegExpMacroAssembler::CanReadUnaligned() {
 #ifdef V8_HOST_CAN_READ_UNALIGNED
   return true;
 #else
   return false;
 #endif
 }
 
 
-#ifdef V8_NATIVE_REGEXP  // Avoid unused code, e.g., on ARM.
+#ifndef V8_INTERPRETED_REGEXP  // Avoid unused code, e.g., on ARM.
 
 NativeRegExpMacroAssembler::NativeRegExpMacroAssembler() {
 }
 
 
 NativeRegExpMacroAssembler::~NativeRegExpMacroAssembler() {
 }
 
 
 bool NativeRegExpMacroAssembler::CanReadUnaligned() {
@@ skipping 185 matching lines @@
   ASSERT(static_cast<size_t>(old_stack_base - stack_pointer) <= size);
   Address new_stack_base = RegExpStack::EnsureCapacity(size * 2);
   if (new_stack_base == NULL) {
     return NULL;
   }
   *stack_base = new_stack_base;
   intptr_t stack_content_size = old_stack_base - stack_pointer;
   return new_stack_base - stack_content_size;
 }
 
-#endif  // V8_NATIVE_REGEXP
+#endif  // V8_INTERPRETED_REGEXP
+
 } }  // namespace v8::internal