Implement IEEE-754R 2008 nextUp/nextDown functions in the guise of the function APFloat::next(bool nextDown).

rdar://13852078

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182945 91177308-0d34-0410-b5e6-96231b3b80d8
MCObjectSymbolizer: Switch from IntervalMap to sorted vector, following r182625.

This removes the need for the missing SectionRef operator< workaround, and fixes
an IntervalMap assert about alignment on MSVC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182949 91177308-0d34-0410-b5e6-96231b3b80d8
Use the const_cast only where necessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182950 91177308-0d34-0410-b5e6-96231b3b80d8
Fix a couple of typos and 80-col.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182954 91177308-0d34-0410-b5e6-96231b3b80d8