org.jmacs 1.13

• ~.IControlsGui: setActionListener + actionPerformed replace setContext
• ~.pdf.DiDriver: IPdfCmds no longer dealt with, but left for the interpreter; control flag now actually observed
• ~.pdf.IPdfCmds now required to override toString() so as to return a declared command string, so that they may be identified by any interpreter. The string should begin with an underscore, to indicate that it is not a command that may be sumbitted from the commandline.
• ~.pdf.IPdfIntivCmd dropped--IPdfCmd may now be used, since a result is now returned in the interactive case as well

• ~.IMonitorGui.IContext.submitCmd: IResultHandler arg removed in all cases--turns out not to be required
• ~.IDiDriver.IContext: subscribe(String diName, boolean b) added