[pygobject] Fix make distcheck

[Christoph Reiter <creiter src gnome org>]

commit 86fb783d0f00a49ea7e66ad73be7e150eb0162db
Author: Christoph Reiter <reiter christoph gmail com>
Date:   Wed Feb 14 02:07:13 2018 +0100

    Fix make distcheck

 tests/Makefile.am | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index d9122ece..216aca5c 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -127,6 +127,7 @@ EXTRA_DIST = \
        test_object_marshaling.py \
        test_option.py \
        test_properties.py \
+       test_pygtkcompat.py \
        test_signal.py \
        test_source.py \
        test_subprocess.py \
@@ -145,15 +146,19 @@ EXTRA_DIST = \
        test_docstring.py \
        test_repository.py \
        test_resulttuple.py \
+       test_unknown.py \
        test_ossig.py \
-       compat_test_pygtk.py \
+       __init__.py \
        gi/__init__.py \
        gi/overrides/__init__.py \
        gi/overrides/Regress.py \
        $(NULL)
 
 clean-local:
-       rm -f $(target_libraries) file.txt~
+       rm -f $(target_libraries) file.txt~;
+       @if [ "$(abs_builddir)" != "$(abs_srcdir)" ]; then \
+               rm -f __init__.py; \
+       fi;
 
 # Unsetting MSYSTEM prevents msys2 from changing os.path.sep to "/"
 RUN_TESTS_ENV_VARS= \