[9] RFR (M): 8050166: Get rid of some package-private methods on arguments in j.l.i.MethodHandle

[Vladimir Ivanov]

http://cr.openjdk.java.net/~vlivanov/8050166/webrev.00/
https://bugs.openjdk.java.net/browse/JDK-8050166
Get rid of the following methods in j.l.i.MethodHandle:
  * convertArguments(MethodType newType)
  * bindArgument(int pos, BasicType basicType, Object value)
  * bindReceiver(Object receiver)
  * dropArguments(MethodType srcType, int pos, int drops)
  * permuteArguments(MethodType newType, int[] reorder)

Testing: jdk/java/lang/invoke, jdk/java/util/streams, nashorn, octane w/ 
"-ea -esa" and COMPILE_THRESHOLD={0,30}.

Thanks!

Best regards,
Vladimir Ivanov