docs: Fix up HTML links to proper reST links.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171382 91177308-0d34-0410-b5e6-96231b3b80d8
docs: Remove useless discussion.

The linked Makefile is always up to date, so there's no point in having
a rotting list of libraries.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171383 91177308-0d34-0410-b5e6-96231b3b80d8
docs: `3.2` -> `3.3`

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171384 91177308-0d34-0410-b5e6-96231b3b80d8