[8u40] Request for Approval: 8054029: BitSet.toString() can throw IndexOutOfBoundsException

[Ivan Gerasimov]

Hello!

Would you please approve this unaltered fix.
The fix applies cleanly without shuffling, as it was done before the 
repository restructure.

Bug: https://bugs.openjdk.java.net/browse/JDK-8040806
Jdk 9 change: http://hg.openjdk.java.net/jdk9/dev/jdk/rev/3bbb836bdf90
Review: 
http://mail.openjdk.java.net/pipermail/core-libs-dev/2014-May/026747.html

Sincerely yours,
Ivan