Respect DESTDIR, and create modes directory before installation.
Respect DESTDIR, and create modes directory before installation.

This fixes packaging on some operating systems, like OpenBSD.


git-svn-id: 8770c0d899e4b89c6d24c9e9bf8faf01a1785cca@41387 72bbbca6-d526-0410-a7d9-f06f51895060

jimregan/apertium-pl-sk