posix: port to LLVM 3.8/3.9

README.md

arch/generic/CMakeLists.txt

arch/generic/timing-arch.cc

arch/i386/dispatch.cc

arch/i386/idt.cc

arch/i386/lapic.cc

arch/i386/machine.cc

arch/i386/machine.h

arch/i386/memutil.cc

arch/i386/output.h

arch/i386/reschedule-ast.cc

arch/i386/serial.cc

arch/i386/syscall.cc

arch/patmos/timing-arch.cc

generator/attributor/main.cc

generator/coder/syscall_full.py

generator/extractor/main.cc

os/timing.h

toolchain/detect

toolchain/llvm-link.py