[Mackx]

On request of dima_tr I changed the call to the startup_complete call.
Copy the FBReader that is in the zip file to Programs\_fbreader\bin\ to overwrite the old version.
When the desktop file is clicked again the existing FBReader document will be 'started' (brought to the front) again. Note that when clicking on another document that is linked to FBReader, a new instance of FBReader is started. DR1000 users will see this as a second FBReader-tab.

I still have to investigate the behaviour of the fileOpen/Close ipc-calls.