(usage): Add omitted \n\ at the end of a line in the usage message.
tree4eacea1109fd0c1eb6ec29a74b3f3d14ff8d280b
-rw-r--r-- 11022 ABOUT-NLS
-rw-r--r-- 17996 COPYING
-rw-r--r-- 7722 INSTALL
drwxr-xr-x - doc
drwxr-xr-x - lib
drwxr-xr-x - old
drwxr-xr-x - po
drwxr-xr-x - src
drwxr-xr-x - tests