A client can specify "IncludeDeclaration" in its ReferenceParams.
When they do so, we want to include the declaration, even if it was not
in the scope we searched for references.
Additionally, we also return the location of the declaration first in
the result array when it is included in the results.
Updates golang/go#32572
Change-Id: I12837cd98102ee8d531f0f4bac2fb7bded2564c0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184723
Run-TryBot: Suzy Mueller <suzmue@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
abb7e64e89