lang: Replace the go-bindata usage with embed

This doesn't let us have nested mcl at the moment, but we could improve
on this with an embed API for each package. For now this makes building
the project easier.

misc/make-deps.sh

@@ -150,7 +150,6 @@ go get golang.org/x/tools/cmd/goyacc			# formerly `go tool yacc`
 go get golang.org/x/tools/cmd/stringer			# for automatic stringer-ing
 go get golang.org/x/lint/golint				# for `golint`-ing
 go get golang.org/x/tools/cmd/goimports		# for fmt
-go get github.com/kevinburke/go-bindata/go-bindata	# for compiling in non golang files
 go get github.com/dvyukov/go-fuzz/go-fuzz		# for fuzzing the mcl lang bits
 if in_ci; then
 	go get -u gopkg.in/alecthomas/gometalinter.v1 && \