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Remove tools/rgb; the code isn't portable enough (relies upon <ndbm.h>) Tested on NetBSD 3.1 and Fedora Core 8 (XXX: although the generated .db file has the correct contents on FC8, it's also 161MiB instead of 64KiB. I think this is a problem in the build of the db routines in tools/compat, and we'll need to debug separately.). Fixes cross-build fallout from PR 36836