Fix the in-tree benchmarks

Which piggy-back on the integration tests for getting their dependencies.

minibenchmarks/django_template.py

 import os
 import sys
-sys.path.append(os.path.join(os.path.dirname(__file__), "../test/integration/django"))
+sys.path.append(os.path.join(os.path.dirname(__file__), "../test/testsuite/lib/django"))
 
 from django.template.base import Origin, Template, Context, TemplateDoesNotExist
 from django.conf import settings

minibenchmarks/pyxl_bench.py

 import os
 import sys
 
-sys.path.append(os.path.join(os.path.dirname(__file__), "../test/integration/pyxl/"))
+sys.path.append(os.path.join(os.path.dirname(__file__), "../test/testsuite/lib/pyxl/"))
 
 from pyxl.codec.register import pyxl_transform_string
 

minibenchmarks/sqlalchemy_declarative.py

@@ -2,7 +2,7 @@
 
 import os
 import sys
-sys.path.append(os.path.join(os.path.dirname(__file__), "../test/integration/sqlalchemy/lib"))
+sys.path.append(os.path.join(os.path.dirname(__file__), "../test/testsuite/lib/sqlalchemy/lib"))
 
 from sqlalchemy import Column, ForeignKey, Integer, String
 from sqlalchemy.ext.declarative import declarative_base

minibenchmarks/sqlalchemy_imperative.py

 import os
 import sys
-sys.path.append(os.path.join(os.path.dirname(__file__), "../test/integration/sqlalchemy/lib"))
+sys.path.append(os.path.join(os.path.dirname(__file__), "../test/testsuite/lib/sqlalchemy/lib"))
 
 from sqlalchemy import Column, ForeignKey, Integer, String, Table, MetaData
 from sqlalchemy.ext.declarative import declarative_base