Moved the MachOWriter and ELFWriter out of the Target/* files. Placed the
definition of it into the CodeGen library. This is so that a backend doesn't
necessarily add in these writers if it doesn't use them (like in the lli
program).

llvm-svn: 34034
diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.h b/llvm/lib/Target/PowerPC/PPCTargetMachine.h
index af35cc5..a249952 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.h
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.h
@@ -69,10 +69,10 @@
   virtual bool addPreEmitPass(FunctionPassManager &PM, bool Fast);
   virtual bool addAssemblyEmitter(FunctionPassManager &PM, bool Fast, 
                                   std::ostream &Out);
-  virtual bool addObjectWriter(FunctionPassManager &PM, bool Fast,
-                               std::ostream &Out);
   virtual bool addCodeEmitter(FunctionPassManager &PM, bool Fast,
                               MachineCodeEmitter &MCE);
+  virtual bool addSimpleCodeEmitter(FunctionPassManager &PM, bool Fast,
+                                    MachineCodeEmitter &MCE);
 };
 
 /// PPC32TargetMachine - PowerPC 32-bit target machine.