- provisions for alternative groupings of zones

- extend indices() for boundary meshes to handle wordRes as well

- remove (unused) Istream constructors, prune some unused methods,
  rationalize write() vs writeDict().
  Deprecate inconsistent construction order.

- handle empty names for ".ftr" surface patches (for plain triSurface
  format) with double-quoted strings for more reliable streaming.
  Written on a single line.

  This is _backward_ compatible, but if users have been parsing these
  files manually, they will need to adjust their code.

Previously:
```
  (
  frt-fairing:001%1
  empty

  windshield:002%2
  empty
  ...
  )
```

Updated (with example handling of empty name):
```
  (
  frt-fairing:001%1 empty

  windshield:002%2 ""
  ...
  )
```

- makes for easier extraction of boundary values since it encapsulates
  start/size directly.

Eg,
    SubList<T>(allValues, patches.range());
or
    bitSet(blocked, patches.range(patchi));

- The inGroups is a wordList.
  It can be flattened on output to make files more readable.

This reverts commit c5bea524.

This reverts commit b18f6cc1.