file1.c: mkostemp->mktemp (backward compatibility)


git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2539 ba6dc0ae-232f-0410-883f-9ebac64fc565
Fix previous revision


git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2540 ba6dc0ae-232f-0410-883f-9ebac64fc565