first draft for opening files from command line or graphical file manager in the current Purr Data instance

first draft of saving the preferences, including the gui preset (still won't write to file for some reason)

remove realpath call and associated code for showing recent files (we get recent files in the native file dialog for free)

remove commented code for gathering up command line file list (now we just send each invidivually to the GUI)

 *added legacy option for iemgui objects. Starting pd-l2ork with -lega…

…cy flag positions iemgui objects in their old, vertically inconsistent locations for the sake of retaining complete backwards compatibility.

*added sys_legacy global for inclusion of other potential legacy breakages that may develop later.

*fixed segfault at start-up due to faulty allocation of the string length for checking for unique instance of pd-l2ork
*made unique check in pd.tk more robust in respect to relative paths and multiple files by making sure that the script always goes back to the original directory from which it was invoked, so as to ensure that the path (if relative) is valid

*fixed proper opening of paths with spaces ia unique check

*fixed how window shortcuts (ctrl+w and ctrl+q) behave in the view list menu for arrays

*fixed bug where patches with relative paths and multiple patches did not open properly within the existing instance of pd-l2ork

*fixed bug where recent files did not construct a proper path+filename when invoking it from a command line (at startup)

*refined recent documents logic (limiting it to the requested size, added files opened from the command line)
*fixed buggy way of focusing new windows

Removed unnecessary debugging hooks. Added -unique flag that enables spawning of multiple instances of pd-l2ork (disabled by default which means all new file opens will be forwarded to the existing instace). Made ALSA default driver