Following cases from command line are possible:
* 'mc' (no arguments):
active panel uses current directory
passive panel uses "other_dir" from ini
* 'mc dir1 dir2' (two arguments):
left panel uses dir1
right panel uses dir2
* 'mc dir1' (single argument):
active panel uses current directory
passive panel uses dir1
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
6da546bcf3