(empfile, teldir, motdfil, downfil, disablefil, telfil, annfil)

(banfil, authfil, timestampfil): Make file names relative to DATADIR.
(main): emp_server and files change to the data directory.  fairland
has to write newcap_script to the initial current directory, so it
keeps it and makes file names relative to DATADIR absolute.
(fixup_files): Nothing to do, remove.  This fixes the following bug:
fixup_files() formed file names by appending ep->name instead of the
base name of ep->file to datadir.  Thus, fixup_files() changed file
names even when datadir had the compiled-in value.  When emp_config()
couldn't open econfig, it failed to call fixup_files(), and different
file names got used.  Note that with this revision the file names
revert to the names used before fixup_files() was introduced.  Closes
#1146080.
(print_config): Printing file names as comments is not really useful,
remove.
(otherfiles, ofiles): Unused, remove.
(emp_config, main): Previously, pconfig had to call emp_config() even
when it didn't want to read econfig, just to run fixup_files().  This
is no longer necessary.  Simplify.

include/file.h

@@ -37,8 +37,8 @@
 #include <stddef.h>
 
 struct empfile {
-    char *name;			/* file name (e.g., "treaty") */
-    char *file;			/* file path */
+    char *name;			/* Empire name (e.g., "treaty") */
+    char *file;			/* file name (relative to data directory) */
     int flags;			/* misc stuff */
     int mode;			/* O_flags */
     int size;			/* size of object */