hg: panama/panama/jdk: Pointer<Void>, not Pointer<void>

[henry.jen at oracle.com]

Changeset: 6e3380c0a476
Author:    henryjen
Date:      2015-09-21 18:26 -0700
URL:       http://hg.openjdk.java.net/panama/panama/jdk/rev/6e3380c0a476

Pointer<Void>, not Pointer<void>

! src/jdk.dev/share/classes/com/sun/tools/jextract/JType.java