Updates for Turkish translation.
Merge branch 'master' into next
openvpn: Update to version 2.3.2

Fixes #10440
proxy: Set number of file descriptors much higher.

Some users are hitting the 65k limit regularly, so
we set the limit to a much higher number.
squid: Apply patch for properly detect rlimit.

https://bugzilla.ipfire.org/show_bug.cgi?id=10445
samba: update to 3.6.21.
Merge branch 'master' into next
Merge branch 'next' into fifteen

Conflicts:
	doc/language_issues.tr