necessary there.
Add a "cmdarg_err()" routine to report command-line option errors; it
creates a console if necessary, and prints the command name and the
trailing newline. Also add "cmdarg_err_cont()", which also creates a
console if necessary, and prints a trailing newline but no command name;
it's used to continue the message. Use those, rather than
"g_warning()", for errors.
That means that we no longer need to pass the command name to various
command-line argument parsing routines.
svn path=/trunk/; revision=16526
Jakub Zawadzki