Split on \r\n and \n accordingly during unicode compilation, closes #10991

Author: josevalim

lib/elixir/unicode/properties.ex

@@ -138,7 +138,7 @@ defmodule String.Casing do
   codes =
     special_path
     |> File.read!()
-    |> String.split("\n", trim: true)
+    |> String.split(["\r\n", "\n"], trim: true)
     |> Enum.reduce(codes, fn
       "", acc ->
         acc
@@ -325,7 +325,7 @@ defmodule String.Break do
   whitespace =
     prop_path
     |> File.read!()
-    |> String.split("\n")
+    |> String.split(["\r\n", "\n"])
     |> Enum.reduce([], fn line, acc ->
       case :binary.split(line, ";") do
         [<<first::4-bytes, "..", last::4-bytes, _::binary>>, <<" White_Space", _::binary>>] ->

lib/elixir/unicode/tokenizer.ex

@@ -47,7 +47,7 @@ defmodule String.Tokenizer do
   {start, continue, patterns} =
     prop_path
     |> File.read!()
-    |> String.split("\n", trim: true)
+    |> String.split(["\r\n", "\n"], trim: true)
     |> Enum.reduce({start, continue, []}, fn line, acc ->
       [codepoints | category] = :binary.split(line, ";")