Bug#472142: epiphany-browser: libffi built from separate source, pleae b-d on libffi-dev

[Matthias Klose]

Package: epiphany-browser
Severity: important
Usertags: libffi

After 10 years libffi does have a new upstream release again; this
version is now packaged independent from GCC; once all packages are
converted to use the binaries built from the separate libffi, GCC
will stop building libffi packages.

Please replace the current build dependencies lib*ffi4-dev with
lib*ffi-dev and rebuild the package.