Revamp the formatting of C++11 braced init lists.

The fundamental concept is:
Format as if the braced init list was a function call (with parentheses
replaced by braces). If there is no name/type before the opening brace
(e.g. if the braced list is nested), assume a zero-length identifier
just before the opening brace.

This behavior is gated on a new style flag, which for now replaces the
SpacesInBracedLists style flag. Activate this style flag for Google
style to reflect recent style guide changes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186433 91177308-0d34-0410-b5e6-96231b3b80d8
Fix formatting. No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186437 91177308-0d34-0410-b5e6-96231b3b80d8
FileCheckize test/Driver/immediate-options.c

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186438 91177308-0d34-0410-b5e6-96231b3b80d8
ObjectiveC migration: complete migrating class
declaration to include list of protocols class
conforms to. 


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186443 91177308-0d34-0410-b5e6-96231b3b80d8
Update for llvm API change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186448 91177308-0d34-0410-b5e6-96231b3b80d8
Fix crash on complex constant zero.

Fixes <rdar://problem/14442543>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186452 91177308-0d34-0410-b5e6-96231b3b80d8
clang-format: Improve handling of unterminated string literals.

Before, clang-format would simply eat these as they were recognized as
whitespace. With this patch, they are mostly left alone.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186454 91177308-0d34-0410-b5e6-96231b3b80d8