Reset of the release notes after the branching of 3.5

[rengolin]

Looks good, but you should get an ack from Sean.

cheers,
--renato

[silvas]

We should make this change after the release. Traditionally Bill has merged the in-tree release notes into the release branch at some late point in the release cycle. The reason is that it is easier for developers to modify the in-tree version than the one on the release branch.

ReleaseNotes.rst

 =====================================
-Clang 3.5 (In-Progress) Release Notes
+Clang 3.6 (In-Progress) Release Notes
 =====================================
 
 .. contents::

 
 .. warning::
 
-   These are in-progress notes for the upcoming Clang 3.5 release. You may
-   prefer the `Clang 3.4 Release Notes
-   <http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html>`_.
+   These are in-progress notes for the upcoming Clang 3.6 release. You may
+   prefer the `Clang 3.5 Release Notes
+   <http://llvm.org/releases/3.5/tools/clang/docs/ReleaseNotes.html>`_.
 
 Introduction
 ============
 
 This document contains the release notes for the Clang C/C++/Objective-C
-frontend, part of the LLVM Compiler Infrastructure, release 3.5. Here we
+frontend, part of the LLVM Compiler Infrastructure, release 3.6. 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

 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 3.5?
+What's New in Clang 3.6?
 ========================
 
 Some of the major new features and improvements to Clang are listed

 Major New Features
 ------------------
 
-- Clang uses the new MingW ABI
-  GCC 4.7 changed the mingw ABI. Clang 3.4 and older use the GCC 4.6
-  ABI. Clang 3.5 and newer use the GCC 4.7 abi.
 
-- The __has_attribute feature test is now target-aware. Older versions of Clang
-  would return true when the attribute spelling was known, regardless of whether
-  the attribute was available to the specific target. Clang now returns true
-  only when the attribute pertains to the current compilation target.
-
-
 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 3.4 release include:
+about them. The improvements since the 3.5 release include:
 
-- GCC compatibility: Clang displays a warning on unsupported gcc
-  optimization flags instead of an error.
-
 -  ...
 
 New Compiler Flags
 ------------------
 
-The integrated assembler is now turned on by default on ARM (and Thumb),
-so the use of the option `-fintegrated-as` is now redundant on those
-architectures. This is an important move to both *eat our own dog food*
-and to ease cross-compilation tremendously.
-
-We are aware of the problems that this may cause for code bases that
-rely on specific GNU syntax or extensions, and we're working towards
-getting them all fixed. Please, report bugs or feature requests if
-you find anything. In the meantime, use `-fno-integrated-as` to revert
-back the call to GNU assembler.
-
-In order to provide better diagnostics, the integrated assembler validates
-inline assembly when the integrated assembler is enabled.  Because this is
-considered a feature of the compiler, it is controlled via the `fintegrated-as`
-and `fno-integrated-as` flags which enable and disable the integrated assembler
-respectively.  `-integrated-as` and `-no-integrated-as` are now considered
-legacy flags (but are available as an alias to prevent breaking existing users),
-and users are encouraged to switch to the equivalent new feature flag.
-
-Deprecated flags `-faddress-sanitizer`, `-fthread-sanitizer`,
-`-fcatch-undefined-behavior` and `-fbounds-checking` were removed in favor of
-`-fsanitize=` family of flags.
-
-It is now possible to get optimization reports from the major transformation
-passes via three new flags: `-Rpass`, `-Rpass-missed` and `-Rpass-analysis`.
-These flags take a POSIX regular expression which indicates the name
-of the pass (or passes) that should emit optimization remarks.
-
-The option `-u` is forwarded to the linker on gnutools toolchains.
-
 New Pragmas in Clang
 -----------------------
 
-Loop optimization hints can be specified using the new `#pragma clang loop`
-directive just prior to the desired loop. The directive allows vectorization,
-interleaving, and unrolling to be enabled or disabled. Vector width as well
-as interleave and unrolling count can be manually specified.  See language
-extensions for details.
-
-Clang now supports the `#pragma unroll` and `#pragma nounroll` directives to
-specify loop unrolling optimization hints.  Placed just prior to the desired
-loop, `#pragma unroll` directs the loop unroller to attempt to fully unroll the
-loop.  The pragma may also be specified with a positive integer parameter
-indicating the desired unroll count: `#pragma unroll _value_`.  The unroll count
-parameter can be optionally enclosed in parentheses. The directive `#pragma
-nounroll` indicates that the loop should not be unrolled.
-
 C Language Changes in Clang
 ---------------------------
 

 Internal API Changes
 --------------------
 
-These are major API changes that have happened since the 3.4 release of
+These are major API changes that have happened since the 3.5 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.
 

 Static Analyzer
 ---------------
 
-The `-analyzer-config` options are now passed from scan-build through to
-ccc-analyzer and then to Clang.
-
-With the option `-analyzer-config stable-report-filename=true`,
-instead of `report-XXXXXX.html`, scan-build/clang analyzer generate
-`report-<filename>-<function, method name>-<function position>-<id>.html`.
-(id = i++ for several issues found in the same function/method).
-
-List the function/method name in the index page of scan-build.
-
 ...
 
 Core Analysis Improvements