Add SSL to redbean

Your redbean can now interoperate with clients that require TLS crypto.
This is accomplished using a protocol polyglot that lets us distinguish
between HTTP and HTTPS regardless of the port number. Certificates will
be generated automatically, if none are supplied by the user. Footprint
increases by only a few hundred kb so redbean in MODY=tiny is now 1.0mb

- Add lseek() polyfills for ZIP executable
- Automatically polyfill /tmp/FOO paths on NT
- Fix readdir() / ftw() / nftw() bugs on Windows
- Introduce -B flag for slower SSL that's stronger
- Remove mbedtls features Cosmopolitan doesn't need
- Have base64 decoder support the uri-safe alternative
- Remove Truncated HMAC because it's forbidden by the IETF
- Add all the mbedtls test suites and make them go 3x faster
- Support opendir() / readdir() / closedir() on ZIP executable
- Use Everest for ECDHE-ECDSA because it's so good it's so good
- Add tinier implementation of sha1 since it's not worth the rom
- Add chi-square monte-carlo mean correlation tests for getrandom()
- Source entropy on Windows from the proper interface everyone uses

We're continuing to outperform NGINX and other servers on raw message
throughput. Using SSL means that instead of 1,000,000 qps you can get
around 300,000 qps. However redbean isn't as fast as NGINX yet at SSL
handshakes, since redbean can do 2,627 per second and NGINX does 4.3k

Right now, the SSL UX story works best if you give your redbean a key
signing key since that can be easily generated by openssl using a one
liner then redbean will do all the things that are impossibly hard to
do like signing ecdsa and rsa certificates that'll work in chrome. We
should integrate the let's encrypt acme protocol in the future.

Live Demo: https://redbean.justine.lol/
Root Cert: https://redbean.justine.lol/redbean1.crt

third_party/mbedtls/ecdh.h

@@ -1,51 +1,9 @@
-/* clang-format off */
-
-/**
- * \file ecdh.h
- *
- * \brief This file contains ECDH definitions and functions.
- *
- * The Elliptic Curve Diffie-Hellman (ECDH) protocol is an anonymous
- * key agreement protocol allowing two parties to establish a shared
- * secret over an insecure channel. Each party must have an
- * elliptic-curve public–private key pair.
- *
- * For more information, see <em>NIST SP 800-56A Rev. 2: Recommendation for
- * Pair-Wise Key Establishment Schemes Using Discrete Logarithm
- * Cryptography</em>.
- */
-/*
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
 #ifndef MBEDTLS_ECDH_H
 #define MBEDTLS_ECDH_H
-
-#if !defined(MBEDTLS_CONFIG_FILE)
 #include "third_party/mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
 #include "third_party/mbedtls/ecp.h"
-
-#if defined(MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED)
-#undef MBEDTLS_ECDH_LEGACY_CONTEXT
-/* #include "everest/everest.h" */
-#endif
+#include "third_party/mbedtls/everest.h"
+/* clang-format off */
 
 #ifdef __cplusplus
 extern "C" {
@@ -134,11 +92,7 @@ typedef struct mbedtls_ecdh_context
                                   context in use is specified by the \c var
                                   field. */
 #if defined(MBEDTLS_ECP_RESTARTABLE)
-    uint8_t restart_enabled;    /*!< The flag for restartable mode. Functions of
-                                  an alternative implementation not supporting
-                                  restartable mode must return
-                                  MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED error
-                                  if this flag is set. */
+    uint8_t restart_enabled;    /*!< The flag for restartable mode. */
 #endif /* MBEDTLS_ECP_RESTARTABLE */
 #endif /* MBEDTLS_ECDH_LEGACY_CONTEXT */
 }
@@ -425,7 +379,6 @@ int mbedtls_ecdh_calc_secret( mbedtls_ecdh_context *ctx, size_t *olen,
                       int (*f_rng)(void *, unsigned char *, size_t),
                       void *p_rng );
 
-#if defined(MBEDTLS_ECP_RESTARTABLE)
 /**
  * \brief           This function enables restartable EC computations for this
  *                  context.  (Default: disabled.)
@@ -439,7 +392,6 @@ int mbedtls_ecdh_calc_secret( mbedtls_ecdh_context *ctx, size_t *olen,
  * \param ctx       The ECDH context to use. This must be initialized.
  */
 void mbedtls_ecdh_enable_restart( mbedtls_ecdh_context *ctx );
-#endif /* MBEDTLS_ECP_RESTARTABLE */
 
 #ifdef __cplusplus
 }