MFH: r468995 r471280

• Add DIALOG4PORTS option (default on) to install it for 'options' command [1].
• Add CERTS option (default on) to allow disabling cert dependencies.
• Reword QEMU_DESC to match poudriere-devel.
• Only install ZSH files if the option is enabled.

PR: 225457 [1]
Submitted by: Yasuhiro KIMURA <yasu@utahime.org> [1] (based on)

• Update to 3.2.7

Very minor maintenance release.
Changes: https://github.com/freebsd/poudriere/wiki/release_notes_327

Approved by: portmgr (implicit)