(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.
(emp_config): Use it when argument is NULL. This simplifies callers
except pconfig's main(), which now has to suppress reading the default
file. Also fix callers to check the return value. Previously, a typo
could easily start a grossly misconfigured program, with potentially
disastrous results.
(emp_config, print_config): Cope with km_type.
(worldxset, intset, floatset, optstrset, doubleset, longset): Unused,
remove.
(emp_config): Fail if specified file can't be read or contains errors.
Used to succeed always, returning RET_OK. RET_OK is not appropriate,
since this is not a command. Return 0 on success, -1 on failure.
Callers ignore failure at the moment. A missing or unreadable econfig
file used to be silently ignored. It is still ignored, but no longer
silently. It is questionable whether ignoring is wise, but that's
left for another day.
(emp_config): Improve diagnostic messages.
(set_option): Move diagnostics to caller.
(emp_config): Ignore leading whitespace in `#' comment lines.
(print_config): Simplify printing of km_comment.
(set_option): New parameter val, so it can set and clear options.
(delete_option): Remove.
(KM_ALLOC): Turn macro into enumeration constant.
(KM_INTERNAL): New.
(xdump, xdver): New version dump.
(keymatch, infodir, datadir, teldir, upfil, downfil, disablefil,
telfil, annfil, banfil, timestampfil, privname, privlog, update_times,
update_demandtimes, game_days, game_hours): Use plain char * instead
of s_char * for strings, void * for generic pointers.
EMPPATH() to use EMPDIR. This avoids triggering MSVC bugs, and drops
support for traditional, pre-ISO cpp. Closes#753935.
(gamedir, lostfil, playerbin, updatebin): Unused, remove.
