Quick backend: rename target-specific #defines

Another step towards a single compiler.  The #include build mechanism
relies on macros with the same name to take on different values for
our various targets.  This CL prepends a target-specific string
(and exposes some needed by common code as functions rather than #defines).

Macros and #defines still available for use from target-dependent code,
but functions added for target independent use.  For example,
rRET0 for Arm becomes rARM_RET0 in target-dependent code, and
targetRegister(kRet0) in target-independent code.

No logic changes, other than adding functions to return previously #defined
values.  As of this CL, the primary target includes, xxxLIR.h, have no
macro collisions.

Change-Id: I5e11df844815b7d129b525a209dd7c46bd9a4a09
diff --git a/src/compiler/codegen/CompilerCodegen.h b/src/compiler/codegen/CompilerCodegen.h
index 7584d2b..868e666 100644
--- a/src/compiler/codegen/CompilerCodegen.h
+++ b/src/compiler/codegen/CompilerCodegen.h
@@ -222,6 +222,17 @@
 LIR* opIT(CompilationUnit* cUnit, ArmConditionCode cond, const char* guide);
 uint64_t getPCUseDefEncoding();
 uint64_t getRegMaskCommon(CompilationUnit* cUnit, int reg);
+int s2d(int lowReg, int highReg);
+bool fpReg(int reg);
+bool singleReg(int reg);
+bool doubleReg(int reg);
+uint32_t fpRegMask();
+bool sameRegType(int reg1, int reg2);
+int targetReg(SpecialTargetRegister reg);
+RegLocation locCReturn();
+RegLocation locCReturnWide();
+RegLocation locCReturnFloat();
+RegLocation locCReturnDouble();
 
 }  // namespace art