Renamed GlobalScope to Globals, to avoid name conflicts with Xtext's own elements.

com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/contentassist/ProtobufProposalProvider.java

diff --git a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/contentassist/ProtobufProposalProvider.java b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/contentassist/ProtobufProposalProvider.java
index 2afcb2d..56e47d8 100644
--- a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/contentassist/ProtobufProposalProvider.java
+++ b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/contentassist/ProtobufProposalProvider.java
@@ -23,7 +23,7 @@
 import com.google.common.collect.ImmutableList;
 import com.google.eclipse.protobuf.protobuf.*;
 import com.google.eclipse.protobuf.protobuf.Enum;
-import com.google.eclipse.protobuf.scoping.GlobalScope;
+import com.google.eclipse.protobuf.scoping.Globals;
 import com.google.eclipse.protobuf.ui.grammar.CompoundElements;
 import com.google.eclipse.protobuf.ui.grammar.Keywords;
 import com.google.eclipse.protobuf.ui.labeling.Images;
@@ -40,7 +40,7 @@
 
   @Inject private CompoundElements compoundElements;
   @Inject private EObjectFinder finder;
-  @Inject private GlobalScope globalScope;
+  @Inject private Globals globalScope;
   @Inject private PluginImageHelper imageHelper;
   @Inject private Images imageRegistry;
   @Inject private Keywords keywords;