Include islandora_fits into islandora/modules

[rosiel]

GitHub Issue: #906

What does this Pull Request do?

Includes Islandora Fits as a submodule of Islandora.

What's new?

• Islandora Fits submodule, including its git history.

• Added a dependency to composer.json for ext-simpleXML, required by Islandora FITS so it can parse XML.

• Does this change add any new dependencies? - yes, simpleXML. will be installed automatically when using Composer to update islandora.

• Does this change require any other modifications to be made to the repository
  (i.e. Regeneration activity, etc.)?

• Could this change impact execution of existing code? no, shouldn't.

How should this be tested?

To upgrade to this version:

• add this branch as a repository in your composer.json, and change the spec for "islandora/islandora" to "dev-include-fits" (won't be required after merging).
• composer remove "islandora-rdm/islandora_fits"
• composer update -W "islandora/islandora" (make sure you get the new code)
• cache refresh and restart your webserver so PHP finds the files in their new locations.
• FITS derivatives should work exactly as before.
• Note: I did NOT merge the islandora_fits_tags migration with the islandora tags migration. I'm not sure we should, since this is an optional module. But i'm open to suggestions.

Documentation Status

• Does this change existing behaviour that's currently documented? - no, same behaviour
• Does this change require new pages or sections of documentation? - no
• Who does this need to be documented for? - n/a
• Associated documentation pull request(s): ___ or documentation issue ___

Deployment Status (post-commit)

• Starter Site - will need an update (removing islandora_fits from composer when locking to this version of islandora)
• Install Profile - will need an update (removing islandora_fits)

Additional Notes:

Any additional information that you think would be helpful when reviewing this
PR.

Interested parties

Tag (@ mention) interested parties or, if unsure, @Islandora/committers

[adam-vessey]

Don't appear to be able to comment on it directly, but modules/islandora_fits/migrations/.swp probably shouldn't exist.

[rosiel]

Closing as the composer requirements exceed what you might need with an islandora. Instead, I'll see about transferring the repo to the Foundation.