tv: Add and use tarval_in_range().
iropt: Correct typo in comment.
ia32: Remove stale comment.
ia32: Repair ClimbFrame.
ia32: Simplify ClimbFrame to not use ProduceVal.
amd64: Remove unused call abi support functions.
template: Remove unused and deprecated call abi support functions.
update amd64 TODO
Put unknown entity and jumptables into a dummy owner type

- This way we can keep up the invariant that all entities are childs to
  a compound type
ldstopt: small cleanup
increase modulo_shift if find_double_bits_int_mode
attempt to fix fehler219