Update clang python binding to 6.0.0

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "rplugin/python3/deoplete/clang"]
-	path = rplugin/python3/deoplete/clang
-	url = https://github.com/zchee/libclang-python3.git

rplugin/python3/deoplete/clang/README.txt

@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+// Clang Python Bindings
+//===----------------------------------------------------------------------===//
+
+This directory implements Python bindings for Clang.
+
+You may need to alter LD_LIBRARY_PATH so that the Clang library can be
+found. The unit tests are designed to be run with any standard test
+runner. For example:
+--
+$ env PYTHONPATH=$(echo ~/llvm/tools/clang/bindings/python/) \
+      LD_LIBRARY_PATH=$(llvm-config --libdir) \
+  python -m unittest discover -v
+tests.cindex.test_index.test_create ... ok
+...
+
+OK
+--

rplugin/python3/deoplete/clang/clang/__init__.py

@@ -0,0 +1,24 @@
+#===- __init__.py - Clang Python Bindings --------------------*- python -*--===#
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+#===------------------------------------------------------------------------===#
+
+r"""
+Clang Library Bindings
+======================
+
+This package provides access to the Clang compiler and libraries.
+
+The available modules are:
+
+  cindex
+
+    Bindings for the Clang indexing library.
+"""
+
+__all__ = ['cindex']
+