When there's no mc-tmpdir and a user tries to start two mc sessions
simultaneously, sometimes (in one out of ten attempts on my machine) one
mc session emits the following error message:
Cannot create temporary directory /tmp/mc-lars: File exists (17)
Temporary files will be created in /tmp
Press any key to continue...
Steps to reproduce:
# rm /tmp/mc-$(whoami) -rf
# uxterm -e mc & uxterm -e mc
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>