GitLab

file now uses safe_tempfile() instead of mkstemp() directly, and
safe_tempfile() requires get_full_path() and check_writable_directory()


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2580 35c25a1d-7b9e-4130-9fde-d3aeb78583b8