Gather data files to install using include_package_data=True

This requires adding empty __init__.py files to directories where we store
data. See http://stackoverflow.com/a/13315109/1382869 for an explanation for
why this is the case.

--HG--
branch : stable

setup.py

@@ -32,24 +32,6 @@
 except pkg_resources.DistributionNotFound:
     pass  # yay!
 
-MAPSERVER_FILES = []
-MAPSERVER_DIRS = [
-    "",
-    "leaflet",
-    "leaflet/images"
-]
-
-for subdir in MAPSERVER_DIRS:
-    dir_name = os.path.join("yt", "visualization", "mapserver", "html", subdir)
-    files = []
-    for ext in ["js", "html", "css", "png", "ico", "gif"]:
-        files += glob.glob("%s/*.%s" % (dir_name, ext))
-    MAPSERVER_FILES.append((dir_name, files))
-
-SHADERS_DIR = os.path.join("yt", "visualization", "volume_rendering", "shaders")
-SHADERS_FILES = glob.glob(os.path.join(SHADERS_DIR, "*.vertexshader")) + \
-    glob.glob(os.path.join(SHADERS_DIR, "*.fragmentshader"))
-
 VERSION = "3.3.2"
 
 if os.path.exists('MANIFEST'):
@@ -369,7 +351,7 @@ def run(self):
     ]
     },
     packages=find_packages(),
-    package_data = {'':['*.pxd']},
+    include_package_data = True,
     setup_requires=[
         'numpy',
         'cython>=0.24',
@@ -389,7 +371,6 @@ def run(self):
     license="BSD",
     zip_safe=False,
     scripts=["scripts/iyt"],
-    data_files=MAPSERVER_FILES + [(SHADERS_DIR, SHADERS_FILES)],
     ext_modules=cython_extensions + extensions,
 )