Handle @ in thread id

Handle rows like: 
"RMI RenewClean-[127.0.0.19004,javax.rmi.ssl.SslRMIClientSocketFactory@46e936e7]" Id=39 in TIMED_WAITING on lock=java.lang.ref.ReferenceQueue$Lock@29b794ac
Merge pull request #3 from csms/master

Handle @ in thread id