Added proxy object in testcases.xml
  This override config.xml proxy definition (use "no_proxy" to disable for specific cases or specify another proxy to override).
  Set a specific proxy in any case if no proxy defined in config.xml (in this case no_proxy is useless).
 Added returnmessage set on verifs even if break_on_errors is off
  If an errormessage is set in testcase it will be used, otherwise last verif returnmessage will be used (short messages).
 Added a new hash to store global outputmessage (first key is the testcasefile number in read order, then testcases in numeric order with associated message)
 Added $self->{'config'}->{'httplogfile'} = "http.log"
  It can be overriden in config.xml to use specific log file. <httplogfile>httplogfile.log</httplogfile>.
 Added $self->{'cookie'} variable