Revert new OS and CC detection and related changes since r15923.

src/ia32/macro-assembler-ia32.cc

Index: src/ia32/macro-assembler-ia32.cc
diff --git a/src/ia32/macro-assembler-ia32.cc b/src/ia32/macro-assembler-ia32.cc
index 4808b7587bba368d7068ef4ff199dd5ec1ef4ec9..2ab5a259321cd2cd8095fcd43c14a1886d40e62d 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -1933,7 +1933,7 @@ void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid,
 // 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 V8_OS_BSD4 || V8_OS_CYGWIN || V8_CC_MINGW32
+#if defined(USING_BSD_ABI) || defined(__MINGW32__) || defined(__CYGWIN__)
 static const bool kReturnHandlesDirectly = true;
 #else
 static const bool kReturnHandlesDirectly = false;