This placates 'assert-no-store-file-names', which would prevent
'make dist' from succeeding.
* gnu/packages/patches/libgnomeui-utf8.patch: Replace store file names
with ellipses.
* gnu/packages/patches/libgnomeui-utf8.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/gnome.scm (libgnomeui)[source]: Use it.