Merge branch 'mbedtls-1.3' into development

* mbedtls-1.3:
  Fix compile errors with NO_STD_FUNCTIONS
  Expand config.pl's notion of "full"
  Ack external bugfix in Changelog
  FIx misplaced Changelog entry (oops)
  Fix compile bug: incompatible declaration of polarssl_exit in platform.c
  Fix contributor's name in Changelog