clang-format: Add column layout formatting for braced lists

With this patch, braced lists (with more than 3 elements are formatted in a
column layout if possible). E.g.:

  static const uint16_t CallerSavedRegs64Bit[] = {
    X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,
    X86::R8,  X86::R9,  X86::R10, X86::R11, 0
  };

Required other changes:
- FormatTokens can now have a special role that contains extra data and can do
  special formattings. A comma separated list is currently the only
  implementation.
- Move penalty calculation entirely into ContinuationIndenter (there was a last
  piece still in UnwrappedLineFormatter).

Review: http://llvm-reviews.chandlerc.com/D1457

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189018 91177308-0d34-0410-b5e6-96231b3b80d8
DebugInfo: emit the definition of types when construction vtables are required as these types may never end up emitting the full class data

This might be able to be optimized further by only doing this in the
absence of a key function, but it doesn't look like GCC is doing that so
I'm not rushing to do it just yet.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189022 91177308-0d34-0410-b5e6-96231b3b80d8
Fix dependencies now that the ARC migrator depends on the static analyzer.

Thanks for pointing this out, Stephen. I think this is right now -- I
attempted to try all four valid combinations with both the autoconf and
CMake builds.

See also LLVM changes to the configure script.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189027 91177308-0d34-0410-b5e6-96231b3b80d8