Update schemas to disallow lists in paragraphs

[goneall]

Fixes #1758

Signed-off-by: Gary O'Neall gary@sourceauditor.com

[goneall]

This PR seems to be working - the CI is failing with the following expected errors:

  - src/CECILL-1.1.xml: Unexpected child with tag 'tns:list' at position 2.
  - src/CDL-1.0.xml: Unexpected child with tag 'tns:list' at position 1.
  - src/libpng-2.0.xml: Unexpected child with tag 'tns:list' at position 1.
  - src/APL-1.0.xml: Unexpected child with tag 'tns:list' at position 1.
  - src/Caldera.xml: Unexpected child with tag 'tns:list' at position 1.
  - src/OPUBL-1.0.xml: Unexpected child with tag 'tns:list' at position 1.

@zvr - If you could review the schema changes. I don't know if there is a more elegant way to structure the schema file to avoid all the duplicate code - but the changes seem to work based on some manual testing and the CI results.

[goneall]

@swinslow - FYI - WIP on an updated schema for issue #1758 related to issue #1680

Once this is reviewed, we can update the above license XML files that are failing validation.

[swinslow]

Great, thank you @goneall! I'm happy to go through and update the broken XML files after you give me the go-ahead.

[jlovejoy]

@swinslow @goneall - what are we doing with this one?