Removing -frwitable-strings

[Joe Buck]

On Fri, Dec 19, 2003 at 11:06:04AM -0500, Kaveh R. Ghazi wrote:
> Since we can deprecate it in 3.3.3, I feel that zapping this feature
> in 3.4.0 is fine.  That gives us the one version breathing room most
> people want.

This doesn't feel right; 3.3.3 is a release that is taking place after
3.4 is branched, and there will be very little time gap between 3.3.3
and 3.4.  We aren't giving the users much warning.