Bug 573965 - Version bumps for 4.21 stream

Change-Id: I4ba9561ba09c59cf4a6f2f4331709533d818a40b
Reviewed-on: https://git.eclipse.org/r/c/equinox/rt.equinox.framework/+/181971
Tested-by: Alexander Kurtakov <akurtako@redhat.com>
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>
14 files changed