This patch updates LLDB's in house version of SVE ptrace/sig macros by converting them into constants and inlines. They are house under SVE namespace and are used by process elf-core for reading SVE register data.
I originally thought we would keep the original macro capitalization (similar to how llvm/BinaryFormat/elf.h maintains the elf.h capitalizations even though it does not define these symbols as macros). I still think that would be a good idea, but I don't mind the current version either. If you do keep the current version, then I think we should also change the namespace name to lower case (sve::).
too aggressive search&replace ?