Build with Tycho 0.22.

Use the same version for tycho and tycho-extras as we do in EGit.

Change-Id: Iaa50aa60cbdb0172166f0c62681b05793cadae50
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
Ignore project file.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>