stamps to UTC instead of local time: passing a struct utimbuf fixes it.

(doh!)
This explains why some sysops don't see SCFG save-changes forcing an sbbsctrl
config reload (it wasn't updating the timestamp of ctrl/recycle if the file
already existed).

mutex files).

was specified.

in the access mask. This problem was evident in the FTP server not allowing
simultaneous downloads of the same file.

mounted shared (now why is this different than NFS or local file systems?
and why is it different than smbfs mounted shares on Linux?).

with global JS function (file_mutex).

Updated nopen() and fnopen() prototypes to take const char* for filename.

Get rid of startup.h kludge but makeing YIELD() an empty macro in nopen and
getuserdat