A file name con.zip is also treated in the same way as the special CON
redirection and may not be used as a normal filesystem path in Windows.
This includes any extension, even with multiple dots. Fix checkFilename
and cleaneFilename not handling these cases.
Write new file contents to a temporary file and then rename over the
target file to avoid data loss in the unlikely event there's an error
writing the new file contents or the process is interrupted.
Resolves#416.
Use lib* prefix for the modules impored from the lib package to help
distinguish them more from ordinary variables. Fix up the naming
convention for files to be consistently lowercase_underscore for
JavaScript files.
Hornwitser