U++

Fixing of issue #139 introduced new sel argument for SaveLoadPackageNS and SaveLoadPackage functions.
Mainly, to disable selection of package items inside these functions, if selection will be done after.
Example:

int i = filelist.GetCursor();
int s = filelist.GetSbPos();
SaveLoadPackage(false);
filelist.SetSbPos(s);
filelist.SetCursor(i);

I propose to use such functions with sel = false argument, where such situation exists.