(change_file_mode): Perform the chmod even if the
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-rw-r--r-- 17992 COPYING
-rw-r--r-- 807 GNUmakefile
-rw-r--r-- 7831 INSTALL
-rw-r--r-- 5500 Makefile.maint
-rw-r--r-- 15912 THANKS
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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