Implement a way to avoid part of code (claw ignore)

[clementval]

It can be useful to work around bug or not implemented feature in OMNI compiler or CLAW to have a way to ignore portion of code.

MODULE xyz

CONTAINS
  SUBROUTINE test
    !$claw ignore
    FORALL (i=1:ni, j=1:nj, k=1:nk)
      ! other statements
    END FORALL
    !$claw end ignore
  END SUBROUTINE

END MODULE

The part between !$claw ignore and !$claw end ignore is then ignored during the parsing / transformation / decompilation phases but stay in the transformed code at the same place.