[MacPorts] #53925: flex: Update to 2.6.3

[Ryan Schmidt]

> On Apr 8, 2017, at 15:44, Perry E. Metzger <perry at piermont.com> wrote:
> 
> So one issue -- there seems to be a bug in flex 2.6.3 with things
> that specify the nodefault option. Haven't hit it myself but there
> are complaints in the bug tracker on github.
> 
> I believe the attached patch from the development version is needed.

Thanks

https://github.com/macports/macports-ports/commit/684234e168010ebc93cb5a78bddea7ff23cf65a8