[PATCH] Build libstdc++ as a DLL on Windows, updated for new autotools.

[Dave Korn]

Dave Korn wrote:

>   Bootstrapped on i686-pc-cygwin, tests still running.  

  Results: http://gcc.gnu.org/ml/gcc-testresults/2009-08/msg03258.html

  It looks pretty good to me.  There are some FAILs I haven't seen before but
I think they are all from very recently-added tests; I'm now doing a testrun
of an unpatched version of the same SVN revision just to verify that they were
already FAILing on HEAD with static libstdc++.  Results from that will take
another day or so.

    cheers,
      DaveK