pty4j updated to avoid multi-threading problem with ptsname()
pty4j updated to avoid multi-threading problem with ptsname()

pchel-/pty4j,mvsoder/pty4j,nikll/pty4j,mvsoder/pty4j,traff/pty4j,traff/pty4j,nikll/pty4j,pchel-/pty4j,traff/pty4j