[flang] Update unparse.cc and move declarative directives for now.

Original-commit: flang-compiler/f18@d79503f98ffc1f1975533e0a9ec94f0cbeb5b9fd
Reviewed-on: https://github.com/flang-compiler/f18/pull/96
Tree-same-pre-rewrite: false
4 files changed
tree: 2f88d9afc2006b406b71cf18b8f2946866eb644a
  1. flang/