hg: jdk7u/jdk7u-dev/jdk: 8012326: Deadlock occurs when Charset.availableCharsets() is called by several threads at the same time

[sean.coffey at oracle.com]

Changeset: 6126a0662727
Author:    coffeys
Date:      2013-10-16 05:49 +0100
URL:       http://hg.openjdk.java.net/jdk7u/jdk7u-dev/jdk/rev/6126a0662727

8012326: Deadlock occurs when Charset.availableCharsets() is called by several threads at the same time
Summary: removed the race condition risk from  ExtendedCharset access code
Reviewed-by: sherman

! make/sun/nio/cs/Makefile
! src/share/classes/java/nio/charset/Charset.java
- src/share/classes/sun/nio/cs/ext/META-INF/services/java.nio.charset.spi.CharsetProvider