pfSense

Pass along send_smtp_message() return, otherwise message will not be shown when testing SMTP settings

Ticket #3734:

- Added timeout parameter for SMTP configuration
- Removed STARTTLS option, it's enabled automatically by pear-Mail when
server supports it

Ticket #3734: Retire smtp.inc, sasl.inc and *sasl_client.inc in favor of pear-Mail port

Ticket #3734: Convert notify_via_smtp() to use pear-Mail

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

Ticket #3734: Replace etc/inc/IPv6.inc by pear-Net_IPv6 port

Remove copy of pear-Crypt_CHAP from repo and use ports

Fix path to require pear-Crypt_CHAP installed file. Ticket #3734

Add pear directory to PHP include_path. Ticket #3734

Fix wording of the "Reject leases from" option for a DHCP interface.