Update files for 1.7.14 RC 1

This PR includes the changes necessary to publish RC 1, which I'd like
to do in a day or two. The release notes are cut and pasted from
p-bakker's excellent wiki. Thanks!

Fix line endings in new JavaAdapterTest file. (mozilla#867)

Update release notes for 1.7.13 release

Update Gradle build so that "./gradlew publish" can work for publishing
to Maven staging repo.

Update for 1.7.12 release.

Update files for 1.7.11 release.

Fix maven staging script.

Fix release script.

Release notes and update for 1.7.10.

Release 1.7.9.

Set up 1.7.8 release.