polymake: Add spkg-legacy-uninstall, use sdh scripts

[mkoeppe]

This is to make installation more robust (see #27763).

CC: @dimpase @sophiasage @jplab

Component: packages: experimental

Author: Matthias Koeppe

Branch/Commit: e436971

Reviewer: Dima Pasechnik

Issue created by migration from https://trac.sagemath.org/ticket/27855

[mkoeppe]

Branch: u/mkoeppe/polymake__add_spkg_legacy_uninstall__use_sdh_scripts__destdir_install

[mkoeppe]

New commits:

8f40c63	Add build/pkgs/polymake/spkg-legacy-uninstall
e436971	polymake: DESTDIR install, use sdh scripts

[mkoeppe]

Commit: e436971

[mkoeppe]

Author: Matthias Koeppe

[mkoeppe]

comment:4

The two-stage install via DESTDIR actually does not work, but nevertheless this branch is an improvement.

[mkoeppe]

comment:5

Needs review.

[dimpase]

comment:6

looks good to me

[dimpase]

Reviewer: Dima Pasechnik

[vbraun]

Changed branch from u/mkoeppe/polymake__add_spkg_legacy_uninstall__use_sdh_scripts__destdir_install to e436971