Changes

Add Mylyn to EPP packages

Summary of how and why I have added MyLyn to EPPs.

Below is all the mylyn features in 2023-06 M3 (not including wikitext stuff)

Included in all EPPs:

- org.eclipse.mylyn.ide_feature
- org.eclipse.mylyn.git
- org.eclipse.mylyn.hudson
- org.eclipse.mylyn.reviews.feature

Indirectly included in all EPPs because of a dependency chain starting above:

- org.eclipse.mylyn_feature
  - included as part of context_feature
- org.eclipse.mylyn.builds
  - included as part of mylyn_feature
- org.eclipse.mylyn.commons
  - included as part of mylyn_feature
- org.eclipse.mylyn.commons.identity
  - included as part of mylyn_feature
- org.eclipse.mylyn.commons.notifications
  - included as part of mylyn_feature
- org.eclipse.mylyn.commons.repositories
  - included as part of mylyn_feature
- org.eclipse.mylyn.commons.repositories.http
  - included as part of hudson
- org.eclipse.mylyn.context_feature
  - included as part of ide_feature
- org.eclipse.mylyn.discovery
  - included as part of mylyn_feature
- org.eclipse.mylyn.monitor
  - included as part of mylyn_feature
- org.eclipse.mylyn.tasks.ide
  - included as part of ide_feature
- org.eclipse.mylyn.team_feature
  - included as part of ide_feature
- org.eclipse.mylyn.versions
  - included as part of git

The following are in some of the EPPs, based on listed condition

- org.eclipse.mylyn.java_feature
  - if JDT is included
- org.eclipse.mylyn.pde_feature
  - if PDE is included
- org.eclipse.cdt.mylyn
  - if CDT is included

The following are not part of any of the EPPs, but can be installed from SimRel

- org.eclipse.mylyn.gerrit.dashboard.feature
- org.eclipse.mylyn.gerrit.feature
- org.eclipse.mylyn.trac_feature

Fixes #19

2023-06 M3 SimRel p2 repo

Set version qualifiers with setGitDate script

Part of #22