Reflect constant primitive types back to Java.

We reflect it in the containing class as follows:
public final static TYPE const_NAME = INIT;

Change-Id: I478a6ba75715cfe3ddf1196794153721b793b287
diff --git a/slang_rs_reflection.h b/slang_rs_reflection.h
index c2e9c75..139cb71 100644
--- a/slang_rs_reflection.h
+++ b/slang_rs_reflection.h
@@ -221,16 +221,17 @@
                       std::string &ErrorMsg);
   void genScriptClassConstructor(Context &C);
 
-  void genInitBoolExportVariable(Context &C,
-                                 const std::string &VarName,
-                                 const clang::APValue &Val);
-  void genInitPrimitiveExportVariable(Context &C,
-                                      const std::string &VarName,
-                                      const clang::APValue &Val);
-  void genInitExportVariable(Context &C,
-                             const RSExportType *ET,
-                             const std::string &VarName,
-                             const clang::APValue &Val);
+  static void genInitBoolExportVariable(Context &C,
+                                        const std::string &VarName,
+                                        const clang::APValue &Val);
+  static void genInitPrimitiveExportVariable(Context &C,
+                                             const std::string &VarName,
+                                             const clang::APValue &Val);
+  static void genInitExportVariable(Context &C,
+                                    const RSExportType *ET,
+                                    const std::string &VarName,
+                                    const clang::APValue &Val);
+  static void genInitValue(Context &C, const clang::APValue &Val);
   void genExportVariable(Context &C, const RSExportVar *EV);
   void genPrimitiveTypeExportVariable(Context &C, const RSExportVar *EV);
   void genPointerTypeExportVariable(Context &C, const RSExportVar *EV);