Java: Make Virtual Dispatch Global, but keep SSA local.

Use forceLocal to achive this.

java/ql/lib/semmle/code/java/dispatch/DispatchFlow.qll

@@ -5,7 +5,7 @@
  * data flow check for lambdas, anonymous classes, and other sufficiently
  * private classes where all object instantiations are accounted for.
  */
-overlay[local?]
+overlay[global]
 module;
 
 import java

java/ql/lib/semmle/code/java/dispatch/ObjFlow.qll

@@ -6,7 +6,7 @@
  * The set of dispatch targets for `Object.toString()` calls are reduced based
  * on possible data flow from objects of more specific types to the qualifier.
  */
-overlay[local?]
+overlay[global]
 module;
 
 import java

java/ql/lib/semmle/code/java/dispatch/VirtualDispatch.qll

@@ -2,7 +2,7 @@
  * Provides predicates for reasoning about runtime call targets through virtual
  * dispatch.
  */
-overlay[local?]
+overlay[global]
 module;
 
 import java

java/ql/lib/semmle/code/java/dispatch/internal/Unification.qll

@@ -1,7 +1,7 @@
 /**
  * Provides a module to check whether two `ParameterizedType`s are unifiable.
  */
-overlay[local?]
+overlay[global]
 module;
 
 import java