.coveragerc: use source again

Apparently this causes missing coverage with pdb/pexpect tests.

Author: blueyed

.coveragerc

@@ -1,15 +1,12 @@
 [run]
-include =
-  src/*
-  testing/*
-  .tox/*/lib/python*/site-packages/_pytest/*
-  .tox/*/lib/python*/site-packages/pytest.py
-  .tox\*\Lib\site-packages\_pytest\*
-  .tox\*\Lib\site-packages\pytest.py
+source = pytest,_pytest,testing/
 parallel = 1
 branch = 1
 
 [paths]
-source = src/
-  .tox/*/lib/python*/site-packages/
-  .tox\*\Lib\site-packages\
+source = src/_pytest/
+  .tox/*/lib/python*/site-packages/_pytest/
+  .tox\*\Lib\site-packages\_pytest\
+source_py = src/pytest.py
+  .tox/*/lib/python*/site-packages/pytest.py
+  .tox\*\Lib\site-packages\pytest.py