Bug 539163 - Refactor SemanticHightlighting class for jdt.ls usage

- change all references to SharedASTProvider to
  SharedASTProviderCore as the former is deprecated

Change-Id: I9a5c26471bf0196cd033f92fbb4f29a318f5ef54
Signed-off-by: Jeff Johnston <jjohnstn@redhat.com>
3 files changed