Implements DoubleToI on ARM. Refactor some VFP code at the same time and...

src/arm/lithium-arm.h

Index: src/arm/lithium-arm.h
===================================================================
--- src/arm/lithium-arm.h	(revision 6591)
+++ src/arm/lithium-arm.h	(working copy)
@@ -1431,10 +1431,11 @@
 
 
 // Sometimes truncating conversion from a tagged value to an int32.
-class LDoubleToI: public LTemplateInstruction<1, 1, 0> {
+class LDoubleToI: public LTemplateInstruction<1, 1, 1> {
  public:
-  explicit LDoubleToI(LOperand* value) {
+  explicit LDoubleToI(LOperand* value, LOperand* temp1) {
     inputs_[0] = value;
+    temps_[0] = temp1;
   }
 
   DECLARE_CONCRETE_INSTRUCTION(DoubleToI, "double-to-i")