[waffle] Drop the libEGL linking, take 2

[Chad Versace]

On Wed 10 Sep 2014, Emil Velikov wrote:
>Changes comparing to previous round
> - raised the severity on dlopen/dlsym
> - crushed some typos
> - use the versioned lib on linux and the unversioned on android
> - updated the android build (but untested)

Emil, this looks good to me. It's nice to see one more static dependency 
be removed from Waffle.

I merged your series to the 'next' branch. I'll merge it to 'master' 
after I've had a chance to use it for several Piglit runs.