Bug 507546 - Show variable values inline

Uses code mining to render extra information at end of line.
Lookup for information that's worth being shown relies on a
TextPostion->IVariable adapter being available and returning a value.

Change-Id: I6cbadd48ff6a2888cef047fac5128cb58e7ade3a
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.debug/+/190735
Tested-by: Mickael Istria <mistria@redhat.com>
Reviewed-by: Mickael Istria <mistria@redhat.com>
9 files changed