Merge pull request #1082 from FranciscoBorges/2.3.x

HORNETQ-1202 Fix crash on concurrent modifications. Notice that just making 'matches' a ConcurrentHashMap does not solve it. https://bugzilla.redhat.com/show_bug.cgi?id=964129
https://bugzilla.redhat.com/show_bug.cgi?id=965826 / https://issues.jboss.org/browse/HORNETQ-1211 - just changing toString on passwords
Merge pull request #1088 from clebertsuconic/2.3.x

https://bugzilla.redhat.com/show_bug.cgi?id=965826 / https://issues.jboss.org/browse/HORNETQ-1211 - just changing toString on passwords
HORNETQ-1205 Fix documentation links