elf: update MACHINE header enum
add msp430 CPU
msp430: dasm subfunctions
x64: fix compile_c error on int = int*int
x64: fix compile_c error on int<int
x64: more C stuff
x64: bla compile c
x64: fix more c_compiler
update TODO
begin arm64 support
arm64: tweak instr arg order
arm64: few more instrs
arm64: tweak r32
arm64: ldr
arm64: b
arm64: fix memref offsets
arm64: stp
arm64: fix stp
arm64: adrp
arm64: add instrs