move pytest default config to setup.cfg so it's available for python setup.py test as well as tox

setup.cfg

@@ -3,3 +3,25 @@ universal = 1
 
 [sdist]
 formats = zip
+
+[aliases]
+test = pytest
+
+[tool:pytest]
+minversion = 2.8
+testpaths =
+    Lib/fontTools
+python_files =
+    *_test.py
+python_classes =
+    *Test
+addopts =
+    # run py.test in verbose mode
+    -v
+    # show extra test summary info
+    -r a
+    # run doctests in all .py modules
+    --doctest-modules
+    # py.test raises ImportError with inspect.py (requires pygtk) and with
+    # reportLabPen.py (reportlab). They don't have doctests, it's OK to skip.
+    --doctest-ignore-import-errors

tox.ini

@@ -32,22 +32,3 @@ commands=
     # measure test coverage and upload report to coveralls
     py.test --cov
     coveralls
-
-[pytest]
-minversion = 2.8
-testpaths =
-    Lib/fontTools
-python_files =
-    *_test.py
-python_classes = 
-    *Test
-addopts =
-    # run py.test in verbose mode
-    -v
-    # show extra test summary info
-    -r a
-    # run doctests in all .py modules
-    --doctest-modules
-    # py.test raises ImportError with inspect.py (requires pygtk) and with
-    # reportLabPen.py (reportlab). They don't have doctests, it's OK to skip.
-    --doctest-ignore-import-errors