Use binary dependencies was: Truffle dependency moved to git

[Christian Thalinger]

> On Jan 22, 2016, at 2:12 PM, Jaroslav Tulach <jaroslav.tulach at oracle.com> wrote:
> 
> ### Thursday 21 of January 2016, 15:44:30 @ Gilles Duboscq ###
>> We have binary dependencies for this use-case. Maybe we should start using
>> them (set MX_BINARY_SUITES=truffle). Gilles
> 
> We should start using binary dependencies by default.
> 
> This whole discussion is a proof that people don't want to clone all our 
> repositories by default. They are in almost all cases interested only in the 
> one code in one repository.
> 
> Please, be kind to people trying graal & co. and switch the mx to use binary 
> dependencies by default.

As it turns out, the move of Truffle to github broke MX_BINARY_SUITES.  Back to square one.