hg: panama/panama/jdk: jextract: Context.getInstance is used in many places. but jtreg testing requires multiple independent Context instances. Added Context.newInstance & using it.

[sundararajan.athijegannathan at oracle.com]

Changeset: 5fe0222b7389
Author:    sundar
Date:      2017-08-21 20:06 +0530
URL:       http://hg.openjdk.java.net/panama/panama/jdk/rev/5fe0222b7389

jextract: Context.getInstance is used in many places. but jtreg testing requires multiple independent Context instances. Added Context.newInstance & using it.

! src/jdk.jextract/share/classes/com/sun/tools/jextract/Context.java
! test/com/sun/tools/jextract/Runner.java
! test/com/sun/tools/jextract/recursive.h
! test/com/sun/tools/jextract/recursive.java