Fix httpd config option 'keep_alive_timeout'

The documentation states that the value is in seconds, which was true
when using the Apache like configuration file, but not true when using
the proplist style configuration.
Fix httpd config option 'script_timeout'

This fixes the usage of the httpd configuration option 'script_timeout',
which got ignored before.

The documentation states that the value is in seconds, which was true
when using the Apache like configuration file, but not true when using
the proplist style configuration.
Remove ^L characters hidden randomly in the code. Not those used in text files as delimiters.

While working on a tool that processes Erlang code and testing it against this repo,
I found out about those little sneaky 0xff. I thought it may be of help to other
people build such tools to remove non-conforming-to-standard characters.
inets: httpc improve pipelining
httpc: Enhanched error handling
inets: httpc make httpc_cancel_request/[1,2] asynchronous
Add test for httpd config option 'script_timeout'

The option got ignored before 720721e.
Fix I/O-protocol error handling in eunit

A io_request in eunit reuturns wrong value when it receive getopts or
get_geometry request.
Fix two small silent rules omissions
add {active,N} socket option for TCP, UDP, and SCTP

Add the {active,N} socket option, where N is an integer in the range
-32768..32767, to allow a caller to specify the number of data messages to
be delivered to the controlling process. Once the socket's delivered
message count either reaches 0 or is explicitly set to 0 with
inet:setopts/2 or by including {active,0} as an option when the socket is
created, the socket transitions to passive ({active, false}) mode and the
socket's controlling process receives a message to inform it of the
transition. TCP sockets receive {tcp_passive,Socket}, UDP sockets receive
{udp_passive,Socket} and SCTP sockets receive {sctp_passive,Socket}.

The socket's delivered message counter defaults to 0, but it can be set
using {active,N} via any gen_tcp, gen_udp, or gen_sctp function that takes
socket options as arguments, or via inet:setopts/2. New N values are added
to the socket's current counter value, and negative numbers can be used to
reduce the counter value. Specifying a number that would cause the socket's
counter value to go above 32767 causes an einval error. If a negative
number is specified such that the counter value would become negative, the
socket's counter value is set to 0 and the socket transitions to passive
mode. If the counter value is already 0 and inet:setopts(Socket,
[{active,0}]) is specified, the counter value remains at 0 but the
appropriate passive mode transition message is generated for the socket.

This commit contains a modified preloaded prim_inet.beam due to changes in
prim_inet.erl.

Add tests for {active,N} mode for TCP, UDP, and SCTP sockets.

Add documentation for {active,N} mode for inet, gen_tcp, gen_udp, and
gen_sctp.
Update preloaded
inets: httpc - Remove dead error handling code

Some error handling is only relevant for functions that
end up in gen_server:call and not in gen_server:cast.
eldap: eldap does not support peer verification, removed {verify, 0} from ssl options
inets: added testcase for keep_alive_timeout
Merge branch 'sv-socket-active-n'

OTP-11368

* sv-socket-active-n:
  Update preloaded
  add {active,N} socket option for TCP, UDP, and SCTP
Merge branch 'nox/silent-rules-fixes/OTP-11351' into maint

* nox/silent-rules-fixes/OTP-11351:
  Fix two small silent rules omissions
Merge branch 'maint'
Merge branch 'mururu/fix-eunit-io_request/OTP-11373' into maint

* mururu/fix-eunit-io_request/OTP-11373:
  Fix I/O-protocol error handling in eunit
Merge branch 'maint'
Merge branch 'fredrik/eldap/do_connect_ssl_verify/OTP-11354' into maint

* fredrik/eldap/do_connect_ssl_verify/OTP-11354:
  eldap: eldap does not support peer verification, removed {verify, 0} from ssl options