[osx] add icarus-verilog to the package
update PLATFORMS
[osx] update package builder
[osx] fix icarus package build
[osx] another update to packagemaker files
append QucsSettings.BinDir to QProcess PATH

Otherwise ASCO and qucsveri are not found on the path.
It was working because I had /usr/local/bin set on the path of my terminal.
removed some qDegub messages
[osx] fix remove path
set default asco, handle program not found

If ASCODIR is set on the environment use it.
Otherwise use /usr/local/bin.
Added a check before starting the process.
It should give users a clue if things are not where they should be.
Insert components by single click (like in qucs-0.0.16)
Added "Insert" popup menu item for schematic with subcircuit ports
Insert a schematic with subcircuit ports when single clicked (or Pressed), double click opens the schematic
set "Insert" popup menu item to invisible when schematic has no subcircuit ports