Squashed patches of the following:

- https://github.com/exmakhina/python-xmp-toolkit/commit/3f7546173980610e0687f4eae4eb28aa026e4674
  gentoo commit 14321e655b7b3f6e531c0a079cb131dbd767e1be

- https://github.com/exmakhina/python-xmp-toolkit/commit/1459510907764746534ce41afa85a3bedd7029b9
  test: disable tests involving BlueSquare.gif

- https://github.com/exmakhina/python-xmp-toolkit/commit/bd8a0babef830e9a2c06150f6277ba0ddb1220bd
  libxmp: exempi: exempi returns char-sized bool, not int

diff --git a/libxmp/exempi.py b/libxmp/exempi.py
index 683e240..cddc038 100644
--- a/libxmp/exempi.py
+++ b/libxmp/exempi.py
@@ -1693,6 +1693,7 @@ def check_error(success):
         Return value from library function indicating success or failure.
     """
 
+    success = success & 0xff
     # Unfortunately the success parameter does not seem to always be reliable
     # so we supplement it by explicitly checking the error code.
     ecode = EXEMPI.xmp_get_error()
diff --git a/test/common_fixtures.py b/test/common_fixtures.py
index 135a795..363246c 100644
--- a/test/common_fixtures.py
+++ b/test/common_fixtures.py
@@ -44,7 +44,6 @@ samplefiles = {
     'BlueSquare.ai'   : libxmp.consts.XMP_FT_ILLUSTRATOR,
     'BlueSquare.avi'  : libxmp.consts.XMP_FT_AVI,
     'BlueSquare.eps'  : libxmp.consts.XMP_FT_EPS,
-    'BlueSquare.gif'  : libxmp.consts.XMP_FT_GIF,
     'BlueSquare.indd' : libxmp.consts.XMP_FT_INDESIGN,
     'BlueSquare.jpg'  : libxmp.consts.XMP_FT_JPEG,
     'BlueSquare.mov'  : libxmp.consts.XMP_FT_MOV,
diff --git a/test/samples.py b/test/samples.py
index 4a97203..a7e0412 100644
--- a/test/samples.py
+++ b/test/samples.py
@@ -65,7 +65,6 @@ samplefiles = {
     'BlueSquare.ai'   : libxmp.consts.XMP_FT_ILLUSTRATOR,
     'BlueSquare.avi'  : libxmp.consts.XMP_FT_AVI,
     'BlueSquare.eps'  : libxmp.consts.XMP_FT_EPS,
-    'BlueSquare.gif'  : libxmp.consts.XMP_FT_GIF,
     'BlueSquare.indd' : libxmp.consts.XMP_FT_INDESIGN,
     'BlueSquare.jpg'  : libxmp.consts.XMP_FT_JPEG,
     'BlueSquare.mov'  : libxmp.consts.XMP_FT_MOV,
diff --git a/test/test_exempi.py b/test/test_exempi.py
index 690ce15..54065e2 100644
--- a/test/test_exempi.py
+++ b/test/test_exempi.py
@@ -422,7 +422,6 @@ class TestExempi(unittest.TestCase):
         """Verify that check_file_format function works as expected."""
         pairs = { 'avi':  libxmp.consts.XMP_FT_AVI,
                   'eps':  libxmp.consts.XMP_FT_EPS,
-                  'gif':  libxmp.consts.XMP_FT_GIF,
                   'indd': libxmp.consts.XMP_FT_INDESIGN,
                   'jpg':  libxmp.consts.XMP_FT_JPEG,
                   'mov':  libxmp.consts.XMP_FT_MOV,
@@ -540,6 +539,7 @@ class TestIteration(unittest.TestCase):
         self.assertEqual(props, ["2006, Hubert Figuiere"])
 
 
+    @unittest.skip("Issue x1")
     def test_single_namespace_single_path_leaf_names(self):
         """Get just leaf names from a single path, single namespace."""
         # TODO:  why?