Reland initial bits of "Implement correct OS and CC detection."

src/ia32/macro-assembler-ia32.cc

 // 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 1915 matching lines @@
                             result_size);
 }
 
 
 // If true, a Handle<T> returned by value from a function with cdecl calling
 // convention will be returned directly as a value of location_ field in a
 // register eax.
 // If false, it is returned as a pointer to a preallocated by caller memory
 // region. Pointer to this region should be passed to a function as an
 // implicit first argument.
-#if defined(USING_BSD_ABI) || defined(__MINGW32__) || defined(__CYGWIN__)
+#if V8_OS_BSD4 || V8_OS_MINGW32 || V8_OS_CYGWIN
 static const bool kReturnHandlesDirectly = true;
 #else
 static const bool kReturnHandlesDirectly = false;
 #endif
 
 
 Operand ApiParameterOperand(int index, bool returns_handle) {
   int offset = (index +(kReturnHandlesDirectly || !returns_handle ? 0 : 1));
   return Operand(esp, offset * kPointerSize);
 }
@@ skipping 1239 matching lines @@
   j(greater, &no_memento_available);
   cmp(MemOperand(scratch_reg, -AllocationMemento::kSize),
       Immediate(Handle<Map>(isolate()->heap()->allocation_memento_map())));
   bind(&no_memento_available);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32