GitLab

Added AC_HAVE_FUNCS(vfprintf).
Added AC_REPLACE_FUNCS(remove strchr memset memchr).

function should expect a struct tm, not a time_t as before).

Added AC_HAVE_LIBRARY(socket nsl).
Removed AC_REPLACE_FUNCS(mktime), since mktime is never used.
Don't remove $BUILDTOPDIR/include.

POSIXized include files.
Improved portability.

Replaced u_ with unsigned.

(MAX_NO_OF_CONNECTIONS): Now initialized by main() if HAVE_SYSCONF or
	HAVE_GETDTABLESIZE is defined.

(get_real_username): Test HAVE_LIBAUTHUSER instead of RFC_931.