Add CodeGenOptions::{SoftFloat,FloatABI}, and update the all the (far too many) places to use this instead of using the backend -soft-float and -float-abi= options.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90127 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed