javax.crypto.spec: update PBEParameterSpec to Java 8

Pulling upstream changes from OpenJDK version jdk8u60 for
PBEParameterSpec.

Added new constructor allowing an AlgorithmParameterSpec and the
corresponding getter getParameterSpec.

This CL finishes the port of this package.

Change-Id: I02d463285e185fcb4031a5266d2857b1530159b7
Test: make droid docs, vogar PBEParameterSpecTest
Bug: 29631070