licence: add it everywhere

Makefile,
benchs/RERS/rers2go.sh,
benchs/run-benchmark.sh,
boilerplate/Makefile,
boilerplate/go2pins.c,
boilerplate/go2pins.h,
boilerplate/main.go,
channel/channel.go,
decl/decl.go,
goroutine/goroutine.go,
main.go,
tests/array.go,
tests/concurrent_fibonacci.go,
tests/digit_count.go,
tests/facto.go,
tests/fibonacci.go,
tests/mywhile.go,
tests/passes/channels.go,
tests/passes/funcIntArrayArgs.go,
tests/passes/goroutineOutsideMain.go,
tests/passes/interface.go,
tests/passes/map.go,
tests/passes/notint.go,
tests/passes/panic.go,
tests/passes/pointer.go,
tests/passes/select.go,
tests/passes/slices.go,
tests/passes/struct.go,
tests/passes/switch.go,
tests/passes/variablename.go,
tests/prod_cons.go,
tests/prod_cons_simp.go,
tests/recursion/multirec.go,
tests/recursion/rec_facto.go,
tools/blackbox.go,
tools/callgraph.go,
tools/extract_goroutines/main.go,
tools/formating.go,
tools/print_ast.go,
tools/recursion.go,
transform/afterchannels.go,
transform/alive.go,
transform/arithmeticcall.go,
transform/arraytreatment.go,
transform/cfg/build.go,
transform/cfg/eliminatecallexprstmt.go,
transform/cfg/functioncalls.go,
transform/cfg/linkresults.go,
transform/cfg/transform.go,
transform/cfg/types.go,
transform/channels.go,
transform/checktype.go,
transform/elsefull.go,
transform/format.go,
transform/functiondefs.go,
transform/goroutine.go,
transform/injectdecls.go,
transform/localvariableassignments.go,
transform/meta.go,
transform/normalizedeclarations.go,
transform/regularizedaffect.go,
transform/routineassignments.go,
transform/routinecounter.go,
transform/util.go,
transform/visitor.go: Here.