pkg-stage.sh: _DVD_PACKAGES: a saner list

[• grahamperrin]

Summary

Attention to five of the twenty-one that were listed for releng/13.2 when D39179 began. Condensing to these three:

• emulators/linux_base-c7
• graphics/drm-kmod
• x11/gnome.

Origin of this diff:

• https://github.com/freebsd/freebsd-src/compare/main...grahamperrin:freebsd-src:pkg-stage.diff.

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Side note: misc/freebsd-doc-all is partially affected by https://bugs.freebsd.org/268829,

268829 – misc/freebsd-doc-all: missing styles; and for some languages, HTML files are missing

Test Plan

Without me testing, I assume that the only risk is:

• regression to a size of .iso that will be excessive for a standard DVD.

February 2021 https://bugs.freebsd.org/253483 was for 13 beta 2 (closed, overcome by events).

[• grahamperrin]

Partially fixed by https://github.com/freebsd/freebsd-src/commit/e4e139b828a2278b44496653c1cd5e6298afb3c6, thanks to @gjb …

[• grahamperrin]

e4e139b828a2 pkg-stage.sh: update port trailing version information was X-MFC-13.2: NO, so the base for the diff is now main