deps,src: use SIMD for normal base64 encoding

PR-URL: #39775
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: mscdex

LICENSE

@@ -1713,3 +1713,35 @@ The externally maintained libraries used by Node.js are:
     OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
      ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   """
+
+- base64, located at deps/base64/base64/, is licensed as follows:
+  """
+    Copyright (c) 2005-2007, Nick Galbreath
+    Copyright (c) 2013-2019, Alfred Klomp
+    Copyright (c) 2015-2017, Wojciech Mula
+    Copyright (c) 2016-2017, Matthieu Darbois
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are
+    met:
+
+    - Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+
+    - Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+    IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+    PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+    TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  """

deps/base64/README.md

@@ -0,0 +1,14 @@
+# base64
+
+This project boosts base64 encoding/decoding performance by utilizing SIMD
+operations where possible.
+
+The source is pulled from: https://github.com/aklomp/base64
+
+Active development occurs in the default branch (currently named `master`).
+
+## Updating
+
+```sh
+$ git clone https://github.com/aklomp/base64
+```