docs: Mark ReleaseNotes as "In-Progress"

Even though we do have a `.. warning::` directive on the page, hopefully
having "In-Progress" in the title will help to condition people's
expectations a bit for when they run into the extremely bare-bones
release notes.

Also, when release season comes around again, maybe this will get
people's attention and avoid confusion about what is going into the
upcoming release, and what is for changes to trunk for the next version.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171419 91177308-0d34-0410-b5e6-96231b3b80d8
DiagnosticIds: Fix offset/ID calculation, no impact outside this code.

Patch by Will Dietz:

Minor touchup so the values of Offset/ID reflect their intention.
Previously, the sum (Offset+ID) was correct, but Offset/ID
individually were wrong.

Caught by investigating unsigned overflow reported by -fsanitize=integer.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171421 91177308-0d34-0410-b5e6-96231b3b80d8
hexagon-target-basic.c test: add REQUIRES line for hexagon target


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171422 91177308-0d34-0410-b5e6-96231b3b80d8
[python bindings] Expose cursor.referenced (clang_getCursorReferenced).

Patch by Matthew King!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171423 91177308-0d34-0410-b5e6-96231b3b80d8
Exclude docs/analyzer/ from the default Sphinx build.

This paves the way for converting the analyzer docs to Sphinx (by
setting up a nested Sphinx tree in this directory).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171424 91177308-0d34-0410-b5e6-96231b3b80d8