This reverts commitd4abdefc99("[ORC-RT] Rename macho_tlv.x86-64.s to macho_tlv.x86-64.S (uppercase suffix)", anda7733e9556("Re-apply "[ORC][ORC-RT] Add initial native-TLV support to MachOPlatform."), while I investigate failures on ccache builders (e.g. https://lab.llvm.org/buildbot/#/builders/109/builds/18981)