Appveyor (#157) including a fix for Python 3.6

Tests running and passing on windows.

(cherry picked from commit 87fd29eb83512c177854d9aab3d998478192797c)

appveyor.yml

+environment:
+  matrix:
+    - python: 27
+    - python: 27-x64
+    - python: 34
+    - python: 34-x64
+    - python: 35
+    - python: 35-x64
+    - python: 36
+    - python: 36-x64
+
+install:
+  - "SET PATH=C:\\Python%PYTHON%;c:\\Python%PYTHON%\\scripts;%PATH%"
+  - echo "C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\SetEnv.cmd" /x64 > "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\amd64\vcvars64.bat"
+  - pip install -e .
+  - pip install zope.testrunner zope.testing manuel
+  - pip install zc.buildout zc.recipe.testrunner zc.recipe.egg
+
+build_script:
+  - buildout bootstrap
+  - bin\buildout parts=test
+
+test_script:
+  - bin\test -vvv

src/ZODB/tests/testConfig.py

@@ -33,13 +33,15 @@ class ConfigTestBase(ZODB.tests.util.TestCase):
 
     def _test(self, s):
         db = self._opendb(s)
-        self.storage = db._storage
-        # Do something with the database to make sure it works
-        cn = db.open()
-        rt = cn.root()
-        rt["test"] = 1
-        transaction.commit()
-        db.close()
+        try:
+            self.storage = db._storage
+            # Do something with the database to make sure it works
+            cn = db.open()
+            rt = cn.root()
+            rt["test"] = 1
+            transaction.commit()
+        finally:
+            db.close()
 
 
 class ZODBConfigTest(ConfigTestBase):

src/ZODB/tests/testSerialize.py

@@ -18,6 +18,8 @@ import unittest
 from persistent import Persistent
 from persistent.wref import WeakRef
 
+import zope.testing.setupstack
+
 import ZODB.tests.util
 from ZODB import serialize
 from ZODB._compat import Pickler, PersistentUnpickler, BytesIO, _protocol, IS_JYTHON

src/ZODB/tests/test_fsdump.py

@@ -80,7 +80,7 @@ checker = renormalizing.RENormalizing([
     # Python 3 produces larger pickles, even when we use zodbpickle :(
     # this changes all the offsets and sizes
     (re.compile(r'\bsize=[0-9]+\b'), 'size=<SIZE>'),
-    (re.compile(r'\offset=[0-9]+\b'), 'offset=<OFFSET>'),
+    (re.compile(r'\boffset=[0-9]+\b'), 'offset=<OFFSET>'),
 ])