* origin/raimo/ssl-dist-bench/OTP-14657:
  Write SSL distribution benchmarks
  Polish SSL distribution
  Handle whitebox test message
  Correct distribution doc
  Use SNI when connecting
  Use -ssl_dist_optfile options
  Read in -ssl_dist_optfile to ETS
  Facilitate test certs with common root
  Stop checking DNS name for SNI

The option no longer does anything; systems that lack support for
non-blocking sendfile(2) will use the Erlang fallback.

The parts relating to drivers/ports are now obsolete, and the
provided example was far noisier than it had to be; the only
relevant metric is the number of calls and it's up to the user to
decide how those will be reduced. One could argue for its complete
removal, but I'm inclined to leave it be.

* lukas/system/improve_profile_docs/OTP-14633:
  erts: Add term2bin note about encoding guarantee
  Fix broken link in INSTALL howto
  system: Add info to profiling effeciency guide
  Update message queue and pinfo binary docs
  kernel: Clarify gen_tcp:listen documentation
  system: Add External OSS tools section to profiling guilde

This commit also adds a check to see that all files that
are part of an xi:include also have part of XML_FILES
and vice versa. It also fixes any applications where this
was not true.