pfSense

Update the Copyright notice for pfSense.

xmlrpc, fix usage of space and + character that need different encoding

Improve XMLRPC failure messages/exception handling. Fixes #7448

xmlrpc, use authentication through the basic auth header instead of extra user/pass parameters

XMLRPC, xmlrpc_client, add new scheme parameter in setConnectionData(syncip,port,user,pass,schema), for use by packages that sync to custom locations, set public/private on all functions

XMLRPC, xmlrpc_client set new Netgate copyright.

XMLRPC, xmlrpc_client remove extended class and define setConnectionData(.) function instead.

XMLRPC, xmlrpc_client simplify construction parameters where possible + cleanup

XMLRPC, generic xmlrpc_client implementation + bugfixes in voucher sync

Ticket #3734: Remove xmlrpc.inc, xmlrpc_client.inc and xmlrpc_server.inc

Ticket #3734: Retire PEAR.inc and use PEAR.php from ports

Merge pull request #2581 from PiBa-NL/23_silence_syncerror

xmlrpc_client.inc, silence the php 'crash' error, sync errors are reported through file-notices already.

Since we moved to stream related function on xmlrpc_client, we should use tcp:// as protocol for http. Fix issue reported at https://forum.pfsense.org/index.php?topic=105890.0

Remove debug leftover

Fix #5329

Since PHP 5.6, fsockopen() is checking SSL certificates, xmlrpc_client
is used only for HA today so it's safe to disable this check.

Since fsockopen() doesn't provide a way to disable it, move code to use
stream_socket_client()

Move main pfSense content to src/