[PATCH] Libstdc++ support changes.

[Dave Korn]

Corinna Vinschen wrote:

> In the ChangeLogs,
> please use just one space after the colon.

  Sure.

> At some points you're using different comment types rather freely.

> Other than that it looks like you tested this a lot so it's fine with
> me.  Maybe Chris has some additional comment.

  I'll be tidying the comments up while we wait.

  (Ooh.  Thunder.  May have to go AFK for a while if it gets closer and zappy.)

    cheers,
      DaveK