Log Message:
Upgrade xmlformat packages to version 1.04. Major changes are:

- Assign each token an input line number and display the line number in
  error messages.  This provides better information to the user about
  the location of problems in input files.
- Print the token stack when an error occurs.  This provides some idea of
  the context of the element that is malformed or has malformed content.

The xmlformat-docs package now installs all documentation examples as well.