docs: Convert ReleaseNotes to reST.

This is the last of the "regular" documents to convert to reST, and so
I'm declaring the initial clang reST conversion "done".

However,

- There are some documents in clang/www/ which probably should
  be migrated into clang/docs/, such as www/OpenProjects.html

  The primary thing blocking me from doing this right now is not knowing
  how to set up a redirect so that the old URL's continue to work.

- LibASTMatchersReference.html is not reST. This page is auto-generated
  by clang/docs/tools/dump_ast_matchers.py from the source and has some
  collapse/expand logic that isn't expressible directly with Sphinx, so
  just converting it to reST is not really a good strategy.

  Manuel Klimek and I discussed this and the general agreed-upon
  direction is making that page data-driven so that it, say, pulls in an
  auto-generated blob of JSON which describes the matchers and builds up
  the "matcher reference" part of the page with a small amount of JS.

- There are some rogue .txt files hanging around.

Also, I dropped the little dragon logo at the top because Sphinx was
warning about an external image reference (not sure why, but meh, I
didn't want to fight it). If anything, we would want such a logo
integrated into the site's overall theme, rather than hardcoded here.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170994 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 119 insertions, 0 deletions

diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
new file mode 100644
index 0000000000..27e42bc82f
--- /dev/null
+++ b/docs/ReleaseNotes.rst
@@ -0,0 +1,119 @@
+=======================
+Clang 3.3 Release Notes
+=======================
+
+.. contents::
+   :local:
+   :depth: 2
+
+Written by the `LLVM Team <http://llvm.org/>`_
+
+.. warning::
+
+   These are in-progress notes for the upcoming Clang 3.3 release. You may
+   prefer the `Clang 3.2 Release Notes
+   <http://llvm.org/releases/3.2/docs/ClangReleaseNotes.html>`_.
+
+Introduction
+============
+
+This document contains the release notes for the Clang C/C++/Objective-C
+frontend, part of the LLVM Compiler Infrastructure, release 3.3. Here we
+describe the status of Clang in some detail, including major
+improvements from the previous release and new feature work. For the
+general LLVM release notes, see `the LLVM
+documentation <http://llvm.org/docs/ReleaseNotes.html>`_. All LLVM
+releases may be downloaded from the `LLVM releases web
+site <http://llvm.org/releases/>`_.
+
+For more information about Clang or LLVM, including information about
+the latest release, please check out the main please see the `Clang Web
+Site <http://clang.llvm.org>`_ or the `LLVM Web
+Site <http://llvm.org>`_.
+
+Note that if you are reading this file from a Subversion checkout or the
+main Clang web page, this document applies to the *next* release, not
+the current one. To see the release notes for a specific release, please
+see the `releases page <http://llvm.org/releases/>`_.
+
+What's New in Clang 3.3?
+========================
+
+Some of the major new features and improvements to Clang are listed
+here. Generic improvements to Clang as a whole or to its underlying
+infrastructure are described first, followed by language-specific
+sections with improvements to Clang's support for those languages.
+
+Major New Features
+------------------
+
+Improvements to Clang's diagnostics
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Clang's diagnostics are constantly being improved to catch more issues,
+explain them more clearly, and provide more accurate source information
+about them. The improvements since the 3.2 release include:
+
+-  ...
+
+New Compiler Flags
+------------------
+
+-  ...
+
+C Language Changes in Clang
+---------------------------
+
+C11 Feature Support
+^^^^^^^^^^^^^^^^^^^
+
+...
+
+C++ Language Changes in Clang
+-----------------------------
+
+C++11 Feature Support
+^^^^^^^^^^^^^^^^^^^^^
+
+...
+
+Objective-C Language Changes in Clang
+-------------------------------------
+
+...
+
+Internal API Changes
+--------------------
+
+These are major API changes that have happened since the 3.2 release of
+Clang. If upgrading an external codebase that uses Clang as a library,
+this section should help get you past the largest hurdles of upgrading.
+
+API change 1
+^^^^^^^^^^^^
+
+...
+
+Python Binding Changes
+----------------------
+
+The following methods have been added:
+
+-  ...
+
+Significant Known Problems
+==========================
+
+Additional Information
+======================
+
+A wide variety of additional information is available on the `Clang web
+page <http://clang.llvm.org/>`_. The web page contains versions of the
+API documentation which are up-to-date with the Subversion version of
+the source code. You can access versions of these documents specific to
+this release by going into the "``clang/docs/``" directory in the Clang
+tree.
+
+If you have any questions or comments about Clang, please feel free to
+contact us via the `mailing
+list <http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev>`_.