Reland "Merge old data and pointer space."

src/arm/macro-assembler-arm.h

Index: src/arm/macro-assembler-arm.h
diff --git a/src/arm/macro-assembler-arm.h b/src/arm/macro-assembler-arm.h
index 9a9ea5ff8519490fcc0429e999244c89ceac5b74..e6047adc48c23652b4f95a4fb7d18fd3362bca6d 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -724,7 +724,7 @@ class MacroAssembler: public Assembler {
   // ---------------------------------------------------------------------------
   // Allocation support
 
-  // Allocate an object in new space or old pointer space. The object_size is
+  // Allocate an object in new space or old space. The object_size is
   // specified either in bytes or in words if the allocation flag SIZE_IN_WORDS
   // is passed. If the space is exhausted control continues at the gc_required
   // label. The allocated object is returned in result. If the flag