Swift was failing to autolink frameworks in the new text-based SDKs.
Clang r253060 fixes the underlying issue, so we can go back to relying
on autolinking for these.
This reverts the following commits (newest to oldest):
f65884159092a37ea9d54e52ef22
rdar://problem/23511008
All refutable patterns and function parameters marked with 'var'
is now an error.
- Using explicit 'let' keyword on function parameters causes a warning.
- Don't suggest making function parameters mutable
- Remove uses in the standard library
- Update tests
rdar://problem/23378003