added edge-case Marshal#load spec for extended Hashes containing user-marshaled objects
added edge-case Marshal#load spec for extended Hashes containing user-marshaled objects

jemc/rubinius,dblock/rubinius,dblock/rubinius,sferik/rubinius,ngpestelos/rubinius,heftig/rubinius,jsyeo/rubinius,ngpestelos/rubinius,Azizou/rubinius,digitalextremist/rubinius,Azizou/rubinius,sferik/rubinius,benlovell/rubinius,jsyeo/rubinius,sferik/rubinius,ngpestelos/rubinius,kachick/rubinius,sferik/rubinius,kachick/rubinius,Azizou/rubinius,Wirachmat/rubinius,jemc/rubinius,digitalextremist/rubinius,Wirachmat/rubinius,kachick/rubinius,sferik/rubinius,ngpestelos/rubinius,digitalextremist/rubinius,Wirachmat/rubinius,heftig/rubinius,sferik/rubinius,dblock/rubinius,digitalextremist/rubinius,jsyeo/rubinius,dblock/rubinius,sferik/rubinius,heftig/rubinius,benlovell/rubinius,digitalextremist/rubinius,digitalextremist/rubinius,jsyeo/rubinius,kachick/rubinius,jemc/rubinius,kachick/rubinius,dblock/rubinius,ngpestelos/rubinius,jsyeo/rubinius,Wirachmat/rubinius,jemc/rubinius,Azizou/rubinius,Wirachmat/rubinius,kachick/rubinius,benlovell/rubinius,heftig/rubinius,heftig/rubinius,Azizou/rubinius,Azizou/rubinius,heftig/rubinius,kachick/rubinius,digitalextremist/rubinius,jemc/rubinius,ngpestelos/rubinius,benlovell/rubinius,Wirachmat/rubinius,Azizou/rubinius,benlovell/rubinius,jemc/rubinius,dblock/rubinius,benlovell/rubinius,jemc/rubinius,ngpestelos/rubinius,jsyeo/rubinius,kachick/rubinius,dblock/rubinius,jsyeo/rubinius,benlovell/rubinius,Wirachmat/rubinius,heftig/rubinius