Fix quick fix for missing type in enhanced for loop (eclipse-jdt#2181)

- modify NewVariableCorrectionProposalCore.getDominantNode() to also
  look for parent being enhanced for statement
- add new test to UnresolvedTypesQuickFixTest
- fixes eclipse-jdt#2180

Author: jjohnstn

org.eclipse.jdt.core.manipulation/proposals/org/eclipse/jdt/internal/ui/text/correction/proposals/NewVariableCorrectionProposalCore.java

@@ -416,7 +416,7 @@ private ASTNode getDominantNode(SimpleName[] names) {
 			}
 		}
 		int parentKind= dominator.getParent().getNodeType();
-		if (parentKind != ASTNode.BLOCK && parentKind != ASTNode.FOR_STATEMENT) {
+		if (parentKind != ASTNode.BLOCK && parentKind != ASTNode.FOR_STATEMENT && parentKind != ASTNode.ENHANCED_FOR_STATEMENT) {
 			return dominator.getParent();
 		}
 		return dominator;