x11/florence: Update to 0.7.1 and adopt

[dteske]

Summary

Switch from the stalled SourceForge 0.6.3 distfile to the FrauBSD
continuation on GitHub and take maintainership from ports@.

Drop PORTREVISION, fetch via USE_GITHUB.

Default-on FREEBSD_ORB option replaces the Super key glyph with the
FreeBSD orb (ports-only branding).

Test Plan

$ make
$ make package
$ pkg install -f work/pkg/florence-0.7.0.pkg
$ pkg list florence | grep -e bin -e man

Should show:

/usr/local/bin/florence
/usr/local/share/man/man1/florence.1.gz

Then:

/usr/local/bin/florence --version

Should show:

Florence (/usr/local/bin/florence) 0.7.0

[dteske]

Fix configure: LDFLAGS -lXrandr + autoreconf for 0.7.0 version.

[dteske]

Drop autoreconf; reinplace shipped configure for 0.7.0 (gnome-doc-utils).

[dteske]

FREEBSD_ORB option (default on); await retagged 0.7.0 distinfo.

[dteske]

Refresh distinfo for retagged 0.7.0 (XF86 artwork).

[dteske]

Fix distinfo: retagged 0.7.0 SHA/SIZE (XF86 artwork). Squash-ready tip.

[dteske]

Correct distinfo for retagged 0.7.0 (XF86 artwork); single commit.

[dteske]

Add florence(1) man-page

[dteske]

Update from 0.7.0 to 0.7.1

[dteske]

Satisfy portclippy / portfmt