[vector] Remove VectorSpecies.arrayType and hide genericElementType

[Paul Sandoz]

Hi,

Please review the following change removing VectorSpecies.arrayType and hiding genericElementType [1]:

  http://cr.openjdk.java.net/~psandoz/panama/vector-rm-arrayType/webrev/ <http://cr.openjdk.java.net/~psandoz/panama/vector-rm-arrayType/webrev/>

This change is in response to reviews in preparation for integration into jdk/jdk.

Paul.

[1] We need to fix https://bugs.openjdk.java.net/browse/JDK-6176992 <https://bugs.openjdk.java.net/browse/JDK-6176992>