Write out global initializers and data rel directly to ELF file.

src/IceDefs.h

Index: src/IceDefs.h
diff --git a/src/IceDefs.h b/src/IceDefs.h
index e7d97dbc981c87845b5310f090609a633dfe6665..368e92c35479bed75126766a48df3856aace3c7e 100644
--- a/src/IceDefs.h
+++ b/src/IceDefs.h
@@ -60,7 +60,7 @@ class InstTarget;
 class LiveRange;
 class Liveness;
 class Operand;
-class TargetGlobalLowering;
+class TargetDataLowering;
 class TargetLowering;
 class Variable;
 class VariableDeclaration;
@@ -103,6 +103,8 @@ typedef std::vector<Variable *, CfgLocalAllocator<Variable *>> VarList;
 typedef std::vector<CfgNode *, CfgLocalAllocator<CfgNode *>> NodeList;
 typedef std::vector<Constant *> ConstantList;
 
+typedef std::vector<VariableDeclaration *> VariableDeclarationList;
+
 // SizeT is for holding small-ish limits like number of source
 // operands in an instruction.  It is used instead of size_t (which
 // may be 64-bits wide) when we want to save space.