from mac os x; perhaps we should start using utimes instead of utime in system_setFileTime:

    UTIME(3)                 BSD Library Functions Manual                 UTIME(3)

    NAME
	 utime -- set file times

    LIBRARY
	 Standard C Library (libc, -lc)

    SYNOPSIS
	 #include <utime.h>

	 int
	 utime(const char *path, const struct utimbuf *times);

    DESCRIPTION
	 This interface is obsoleted by utimes(2).
