RET_SYS was used for commands failing due to internal or environmental
errors, but not really systematically. The difference to RET_FAIL is
how dispatch() treats them: RET_SYS got logged, and cost no BTUs.
More specific logging is possible at the point of failure than in
dispatch(). Make sure that's done for all failures that used to
return RET_SYS.
The change in BTU charging affects commands consider, offer, repay,
trade failing due to internal errors. It also affects deity commands
reload and turn (irrelevant because deities get unlimited BTUs), and
commands apropos, info and motd (irrelevant because they cost no
BTUs).
separate the MinGW environment from the MSVC environment and
WIN32 environment. Reorganize the order of the includes so
the system files are always loaded first to prevent with misc.h defines.
Remove system file includes from misc.h.
other. Ensure headers in include/ can be included in any order
(except for econfig-spec.h, which is special). New header types.h to
help avoid inclusion cycles. Sort include directives. Remove some
superflous includes.
upda,ef_open,logerror,emp_config,match_user,show_motd,gamedown,
typed_wu,delete_old_announcements,mobility_check,mobility_init,
allocate_memory,write_newcap_script,main,files,fairland,doconfig,)
[_WIN32]: Switchback to default mode of text.
"t" (text) is not included the ISO/ANSI C standard but "b" (binary)
is included.
emp_config,gamedown,show_motd,match_user,typed_wu,
delete_old_announcements) [_WIN32]: switch the default file mode to
binary to match POSIX. Remove the now unneccessary ifdef for
the open/fopen. Add text mode for user files (econfig/auth).
