Suppress this-escape warnings in some tools.

tools/src/main/java/com/threerings/presents/tools/GenServiceTask.java

@@ -53,6 +53,7 @@ public class GenServiceTask extends InvocationTask
         /** Contains all imports required for the parameters of the methods in this listener. */
         public ImportSet imports = new ImportSet();
 
+        @SuppressWarnings("this-escape")
         public ServiceListener (Class<?> service, Class<?> listener)
         {
             this.listener = listener;

tools/src/main/java/com/threerings/presents/tools/cpp/CPPType.java

@@ -41,6 +41,7 @@ public class CPPType
 
     public final boolean primitive;
 
+    @SuppressWarnings("this-escape")
     public CPPType (Type javaType)
     {
         if (javaType instanceof ParameterizedType) {