maintainer-feedback requested: [Bug 253036] www/firefox: add LTO option

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Bugzilla Automation <bugzilla at FreeBSD.org> has asked freebsd-gecko (Nobody)
<gecko at FreeBSD.org> for maintainer-feedback:
Bug 253036: www/firefox: add LTO option
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253036



--- Description ---
For some reason, I was unable to build Firefox with LTO on 12.2-RELEASE, but it
works on 13.0-ALPHA2 (both amd64).

On 12.2-RELEASE, build times out.

I did not yet test thunderbird or firefox-esr.