jni: Switch to @FastNative for all JNI functions. Deprecate !bang JNI.

Switches all (248) methods that previously used !bang JNI in art/libcore
to all use @FastNative.

Also deprecate !bang JNI since nothing in Android seems to (or should
be) using it anymore.

This measures to be a 3% startup time improvement in system_server.

Test: make test-art-host
Bug: 34955272
Change-Id: I0881f401c7660c79f275235362777bfa58241deb
diff --git a/runtime/native/java_lang_reflect_Parameter.cc b/runtime/native/java_lang_reflect_Parameter.cc
index 0bb9e38..37aa16c 100644
--- a/runtime/native/java_lang_reflect_Parameter.cc
+++ b/runtime/native/java_lang_reflect_Parameter.cc
@@ -63,9 +63,9 @@
 }
 
 static JNINativeMethod gMethods[] = {
-  NATIVE_METHOD(Parameter,
+  FAST_NATIVE_METHOD(Parameter,
                 getAnnotationNative,
-                "!(Ljava/lang/reflect/Executable;ILjava/lang/Class;)Ljava/lang/annotation/Annotation;"),
+                "(Ljava/lang/reflect/Executable;ILjava/lang/Class;)Ljava/lang/annotation/Annotation;"),
 };
 
 void register_java_lang_reflect_Parameter(JNIEnv* env) {