...newly added with 61be109b "tdf#98141 add svg
file for all app icons in all sizes".  Otherwise building the rpms complains
about "Installed (but unpackaged) file(s) found".  (And per <https:
//specifications.freedesktop.org/icon-theme-spec/icon-theme-spec-0.13.html> it
indeed seems OK to have .svg files in all the NxN sub-directories too, not only
the scalable sub-directories.)

Change-Id: I730ca19e67b452b309ca48a26ce806db7780c9f5