Consistently use COMPILER_RT_ABI for all public symbols.
Move prototypes into headers and fix a few inconsistencies.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@202591 91177308-0d34-0410-b5e6-96231b3b80d8
Avoid type pruning.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@202592 91177308-0d34-0410-b5e6-96231b3b80d8
Move __clzti2 into 128bit fragment.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@202593 91177308-0d34-0410-b5e6-96231b3b80d8