pfSense

Fix #6758

extensions.ini must be readable by any users otherwise any php script
called by a non-root user will not be able to use PHP extensions

This is a direct fix for RELENG_2_3_2 since extensions.ini is not being
used anymore on RELENG_2_3 or master

Import a patch to fix Net_IPv6::compress("::")

Obtained from: https://github.com/phil-davis/Net_IPv6/commit/638b96a253164b65c63825c38e79812b6c5f448d
Submitted by: @phil-davis

Fix display advanced after input error for system_gateways_edit

Use case:
1) Edit a gateway that has no advanced settings (i.e. the Advanced section does not need to open on page load) - that works fine.
2) Modify the Gateway IP Address to something invalid like 1:2::z...

Better handle no dhcpv6 leases file

(cherry picked from commit 2355c154b7598f937ba2121429659f5676ce4d96)

Fix #6872 CP bandwidth 0 is no valid

The front-end validation prevents zero from being entered. "Leave empty" is the way to specify no limit.
(cherry picked from commit b7f2ebb5448f7992cceec899504bdd0a29058fb9)

Make setup_serial_port() write config files safely

This function used to replace /boot.conf, /boot/loader.conf and
/etc/ttys on every call. Depending of the moment a power failure
happens, any of these files can be blank and it'll break console setup
on next boot....

Change safe_write_file $content parameter to accept an array

Make $force_binary parameter optional, default to false

Prevent /etc/ttys to miss essential lines

We do not create /etc/ttys from scratch but we change it on every boot.
If original file is corrupted for some reason we can end up with a file
missing essential lines. Added a check to verify if these lines are
missing and add them back in this case

Merge pull request #3153 from NewEraCracker/RELENG_2_3_2+