TZUTC: -0700
MSGID: 53385.syncprog@1:103/705 2d6b53b8
PID: Synchronet 3.21a-Linux master/88b423313 Sep 29 2025 GCC 12.2.0
TID: SBBSecho 3.30-Linux master/86829317e Oct 26 2025 GCC 12.2.0
BBSID: VERT
CHRS: UTF-8 4
FORMAT: flowed
https://gitlab.synchro.net/main/sbbs/-/commit/2279cc7ca8cfbd15a5eda930
Modified Files:
	src/doors/clans-src/src/alliancem.c clansini.c game.c ibbs.c mail.c myibbs.c
myopen.c news.c pawn.c readcfg.c reset.c scores.c unix_wrappers.c
unix_wrappers.h user.c village.c wb_fapnd.c win_wrappers.h
Log Message:
Fix share modes and eliminate POSIX file accesses

The SH_DENY* macros have been deprecated in favour of _SH_DENY*
ones, so we'll use those everywhere.

Also, the last argument to _fsopen() is not a set of bitflags, it's
manifest constants, so fix _fsopen() on *nix.

Finally, eliminate open()/read()/write()/close() in favour of the
C standard stream interface. It was only used in a couple places,
and there's no need to wrap those on Windows.
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