Add AbstractMethod, Constructor, Method

Moves functionality to ART from libcore. Precursor to moving
ArtMethods to native. Mostly performance improvements.

N5 perf before (irrelevant results removed):
            Class_getConstructor  962.87 ===========
         Class_getDeclaredMethod 2394.37 ============================
                 Class_getMethod 2509.20 ==============================
               Class_newInstance 1999.81 =======================
                  Method_invokeI 1439.02 =================
          Method_invokePreBoxedI 1415.82 ================
            Method_invokeStaticI 1456.24 =================
    Method_invokeStaticPreBoxedI 1427.32 =================
            Method_invokeStaticV  814.47 =========
                  Method_invokeV  816.56 =========
After:
                       benchmark      ns linear runtime
            Class_getConstructor 1302.04 ================
         Class_getDeclaredMethod 1459.01 ==================
                 Class_getMethod 1560.40 ===================
               Class_newInstance 2029.94 =========================
                  Method_invokeI 1312.89 ================
          Method_invokePreBoxedI 1255.01 ===============
            Method_invokeStaticI 1289.13 ===============
    Method_invokeStaticPreBoxedI 1196.52 ==============
            Method_invokeStaticV  790.82 =========
                  Method_invokeV  791.73 =========

Performance improvements are more than just fixing regressions introduced
in: http://android-review.googlesource.com/#/c/146069/

Bug: 19264997

Change-Id: Ife79c469fdb09f30e3aefcfc3e0ce5ed32303fce
diff --git a/runtime/class_linker.h b/runtime/class_linker.h
index 68624b0..d7c625d 100644
--- a/runtime/class_linker.h
+++ b/runtime/class_linker.h
@@ -71,11 +71,15 @@
     kJavaLangDexCache,
     kJavaLangRefReference,
     kJavaLangReflectArtMethod,
+    kJavaLangReflectConstructor,
     kJavaLangReflectField,
+    kJavaLangReflectMethod,
     kJavaLangReflectProxy,
     kJavaLangStringArrayClass,
     kJavaLangReflectArtMethodArrayClass,
+    kJavaLangReflectConstructorArrayClass,
     kJavaLangReflectFieldArrayClass,
+    kJavaLangReflectMethodArrayClass,
     kJavaLangClassLoader,
     kJavaLangThrowable,
     kJavaLangClassNotFoundException,