Dirty workarounds to compile jiffy with Erlang/OTP 23 (#3282)

Works for me with:
./configure --disable-pam
./rebar get-deps
./rebar configure-deps
./rebar compile
make install

changes in erlang-native-compiler used by jiffy:

src/rebar_port_compiler.erl
-     {"ERL_LDFLAGS"  , " -L$ERL_EI_LIBDIR -lerl_interface -lei"},
+     {"ERL_LDFLAGS"  , " -L$ERL_EI_LIBDIR -lei"},

src/rebar_utils.erl
--dialyzer({no_missing_calls, escript_foldl/3}).

1 files changed, 0 insertions, 0 deletions

diff --git a/tools/enc b/tools/enc
new file mode 100755
index 000000000..af7ce9762
--- /dev/null
+++ b/tools/enc