Merge remote-tracking branch 'restricted/pr/601' into baremetal-proposed

* restricted/pr/601: (27 commits)
  Fix compile-time guard for optional field in struct
  Move code to reduce probability of conflicts
  Fix typos caught by check-names.sh
  Clarify conditions related to resumption in client
  Introduce getter function for renego_status
  Add getter function for handshake->resume
  Remove now-redundant code
  Remove cache callbacks from config on client
  Fix a few style issues
  Expand documentation of new options a bit
  Fix renaming oversight in documentation
  Remove backticks in doxygen in config.h
  Declare dependency on tickets for two ssl-opt.sh tests
  Exclude new negative options from config.pl full
  Restore config.h defaults
  Address review comments
  Fix ssl_cli resumption guards
  Fix check-files, check-names and check-generated-features
  Add test to all.sh
  Add changelog entry
  ...
diff --git a/ChangeLog b/ChangeLog
index e3c335e..515b19e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -38,24 +38,12 @@
      ServerHello.
    * Add new configuration option MBEDTLS_SSL_PROTO_NO_TLS that enables code
      size savings in configurations where only DTLS is used.
-
-API Changes
-   * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
-     See the Features section for more information.
-   * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
-     for the benefit of saving RAM, by disabling the new compile-time
-     option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
-     API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
-     always return NULL, and removes the peer_cert field from the
-     mbedtls_ssl_session structure which otherwise stores the peer's
-     certificate.
-   * Add a new compile-time option `MBEDTLS_X509_ON_DEMAND_PARSING`,
-     disabled by default, which allows to parse and cache X.509 CRTs
-     on demand only, at the benefit of lower RAM usage. Enabling
-     this option breaks the structure API of X.509 in that most
-     fields of `mbedtls_x509_crt` are removed, but it keeps the
-     X.509 function API. See the API changes section as well as
-     the documentation in `config.h` for more information.
+   * Add new configuration option MBEDTLS_SSL_NO_SESSION_CACHE that enables
+     code size savings in configurations where cache-based session resumption is
+     not used.
+   * Add new configuration option MBEDTLS_SSL_NO_SESSION_RESUMPTION that
+     enables code size savings in configurations where no form of session
+     resumption is used.
 
 Bugfix
    * Server's RSA certificate in certs.c was SHA-1 signed. In the default
@@ -105,6 +93,24 @@
      improve clarity. Fixes #2258.
    * Replace multiple uses of MD2 by SHA-256 in X.509 test suite. Fixes #821.
 
+API Changes
+   * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
+     See the Features section for more information.
+   * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
+     for the benefit of saving RAM, by disabling the new compile-time
+     option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
+     API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
+     always return NULL, and removes the peer_cert field from the
+     mbedtls_ssl_session structure which otherwise stores the peer's
+     certificate.
+   * Add a new compile-time option `MBEDTLS_X509_ON_DEMAND_PARSING`,
+     disabled by default, which allows to parse and cache X.509 CRTs
+     on demand only, at the benefit of lower RAM usage. Enabling
+     this option breaks the structure API of X.509 in that most
+     fields of `mbedtls_x509_crt` are removed, but it keeps the
+     X.509 function API. See the API changes section as well as
+     the documentation in `config.h` for more information.
+
 = mbed TLS 2.16.1 branch released 2019-03-19
 
 Features