(directory_file_name): Add APOLLO conditional.
-rw-r--r-- 4558 GETTING.GNU.SOFTWARE
-rw-r--r-- 23241 INSTALL
-rw-r--r-- 20143 Makefile.in
-rw-r--r-- 30940 PROBLEMS
-rwxr-xr-x 4762 build-ins.in
-rw-r--r-- 6341 config.bat
-rwxr-xr-x 14539 config.guess
-rwxr-xr-x 17091 config.sub
-rw-r--r-- 35834 configure.in
-rwxr-xr-x 50350 configure1.in
drwxr-xr-x - etc
drwxr-xr-x - lib-src
drwxr-xr-x - lisp
drwxr-xr-x - lispref
drwxr-xr-x - lwlib
-rwxr-xr-x 13220 make-dist
drwxr-xr-x - man
drwxr-xr-x - msdos
drwxr-xr-x - nt
drwxr-xr-x - src
-rw-r--r-- 7613 tparam.c
-rw-r--r-- 246 vpath.sed