Python: Fix Python 3 tests

Author: tausbn

python/ql/test/3/extractor-tests/import_depth/test.ql

@@ -1,4 +1,5 @@
 import python
+private import LegacyPointsTo
 
 from ModuleObject m
 /* Exclude the builtins module as it has a different name under 2 and 3. */

python/ql/test/3/library-tests/ControlFlow/Exceptions/Handles.ql

@@ -1,4 +1,5 @@
 import python
+private import LegacyPointsTo
 
 from ExceptFlowNode ex, Value val
 where ex.handledException(val, _, _)

python/ql/test/3/library-tests/ControlFlow/Exceptions/Known.ql

@@ -1,4 +1,5 @@
 import python
+private import LegacyPointsTo
 
 from RaisingNode r
 select r.getLocation().getStartLine(), r.toString(), r.getARaisedType().toString()

python/ql/test/3/library-tests/ControlFlow/Exceptions/Likely.ql

@@ -1,4 +1,5 @@
 import python
+private import LegacyPointsTo
 
 from ControlFlowNode r, ControlFlowNode s
 where

python/ql/test/3/library-tests/ControlFlow/Exceptions/Unknown.ql

@@ -1,4 +1,5 @@
 import python
+private import LegacyPointsTo
 
 from RaisingNode r
 where r.raisesUnknownType()

python/ql/test/3/library-tests/PointsTo/consts/BooleanConstants.ql

@@ -1,5 +1,5 @@
 import python
-import semmle.python.pointsto.PointsTo
+private import LegacyPointsTo
 
 from ControlFlowNode f, Context c, boolean b
 where

python/ql/test/3/library-tests/PointsTo/inheritance/Calls.ql

@@ -1,4 +1,5 @@
 import python
+private import LegacyPointsTo
 
 from Call c, FunctionObject f
 where f.getACall().getNode() = c

python/ql/test/3/library-tests/PointsTo/metaclass/test.ql

@@ -1,4 +1,5 @@
 import python
+private import LegacyPointsTo
 
 from ClassObject cls
 where not cls.isC()

python/ql/test/3/library-tests/PointsTo/regressions/subprocess-assert/ClassValue.ql

@@ -1,4 +1,5 @@
 import python
+private import LegacyPointsTo
 
 // as used in semmle.python.filters.Tests
 from ClassValue c, string base

python/ql/test/3/library-tests/classes/attr/class_attr.ql

@@ -5,6 +5,7 @@
  */
 
 import python
+private import LegacyPointsTo
 
 from ClassObject cls, int line, string name, Object obj
 where