Restore cecil changes that treated GenericParameterConstraints as TypeReferences.

Author: Steve Pfister

src/Java.Interop.Tools.Cecil/Java.Interop.Tools.Cecil/MethodDefinitionRocks.cs

@@ -110,7 +110,7 @@ static bool IsParameterCompatibleWith (TypeReference a, TypeReference b)
 					return true;
 				var gpa = (GenericParameter) a;
 				foreach (var c in gpa.Constraints) {
-					if (!c.IsAssignableFrom (b))
+					if (!c.ConstraintType.IsAssignableFrom (b))
 						return false;
 				}
 				return true;

tools/generator/Java.Interop.Tools.Generator.ObjectModel/GenericParameterDefinition.cs

@@ -72,7 +72,7 @@ public static GenericParameterDefinitionList FromMetadata (IEnumerable<GenericPa
 				ret.Add (new GenericParameterDefinition (
 					p.FullNameCorrected (),
 					(from a in p.Constraints
-					 select a.FullNameCorrected ()).ToArray ()));
+					 select a.ConstraintType.FullNameCorrected ()).ToArray ()));
 			}
 			return ret;
 		}