hg: panama/panama/jdk: Use Type.getMethodDescriptor to build method descriptors

[mikael.vidstedt at oracle.com]

Changeset: 77dd98877dbf
Author:    mikael
Date:      2016-04-22 16:52 -0700
URL:       http://hg.openjdk.java.net/panama/panama/jdk/rev/77dd98877dbf

Use Type.getMethodDescriptor to build method descriptors

! src/java.base/share/classes/jdk/internal/nicl/HeaderImplGenerator.java
! src/java.base/share/classes/jdk/internal/nicl/MethodImplGenerator.java
! src/java.base/share/classes/jdk/internal/nicl/StructImplGenerator.java
! src/java.base/share/classes/jdk/internal/nicl/UnsupportedOperationMethodImpl.java
! src/java.base/share/classes/jdk/internal/nicl/VarargsMethodImplGenerator.java