(main): Remove any trailing slash unconditionally.
-rw-r--r-- 11651 ABOUT-NLS
-rw-r--r-- 17992 COPYING
-rw-r--r-- 1003 GNUmakefile
-rw-r--r-- 7831 INSTALL
-rw-r--r-- 5659 Makefile.maint
-rw-r--r-- 16743 THANKS
drwxr-xr-x - doc
drwxr-xr-x - lib
drwxr-xr-x - m4
drwxr-xr-x - man
drwxr-xr-x - old
drwxr-xr-x - po
drwxr-xr-x - src
drwxr-xr-x - tests