Properly handle fields too short in io_lib_format

Values for which the precision or field width were too small in io_lib_format
could trigger an infinite loop or crash in term/5.

Reported-by: Richard Carlsson
ssl: parse SNI in received client hello records
jinterface: OtpInputStream exceptions show useless value

Arrays have no meaningful toString method, but one must use
Arrays.toString instead. The meaningless value would look for example
like "[C@16f0472", instead of "[2,4]".
ssl: Add simple benchmarks
added SNI decode test to SSL handshake suite
Fix a few javadoc errors

Reported-by: Boris Mühmer
Fix typo in Advanced chapter
rephrase sentence in process links doc
Add 'disksup_posix_only' parameter to disksup

On embedded (Linux) systems the "df" program is very often provided by
the Busybox (or Toolbox) project. This version does not provide the "-l"
option (for displaying only local filesystems) used in disksup.erl.

To make disksup work on these embedded platforms, this patch adds a new
application parameter 'disksup_posix_only', to make diskup use only
options defined in the POSIX standard:
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/df.html
[ct] Add test with netconf server on remote node

The new test is related to support sequence seq12645. It tests that
the netconf client process dies if the node hosting the netconf
server terminates.
ssl: Bench use two nodes
Fix man page warning in proc_lib.xml
Merge branch 'wmalik/processes-doc' into maint

* wmalik/processes-doc:
  rephrase sentence in process links doc
Merge branch 'maint'
Refactor function in eunit using is_function/2

is_function/2 looks present since at least OTP R13B03, so the change
shall not undermine running eunit on older versions of Erlang.

This commit is only refactoring - it contains no functional changes.
erlang:statistics(runtime) returns milliseconds

Specify in the documentation that erlang:statistics(runtime) returns milliseconds.
Fix spec of format function in sys

The argument FormFunc is sys:handle_debug/4war erronously specified as
dbg_fun(), which is a debug function. This has now been corrected by
adding a new type, format_fun().
Merge branch 'siri/sync-stop-gen/OTP-11173'

* siri/sync-stop-gen/OTP-11173:
  Fix man page warning in proc_lib.xml
Merge branch 'siri/master-cuddle-with-tests'

* siri/master-cuddle-with-tests:
  [ct] Add test with netconf server on remote node
Fix typo in erl_eval:exprs comments