New flat_unordered_map to hopefully reduce allocations

git-svn-id: svn+ssh://beta.visl.sdu.dk/usr/local/svn/repos/visl/tools/vislcg3/trunk@10032 cb2587b3-b7ff-0310-8c81-a2a651690ada
More flat unordered

git-svn-id: svn+ssh://beta.visl.sdu.dk/usr/local/svn/repos/visl/tools/vislcg3/trunk@10033 cb2587b3-b7ff-0310-8c81-a2a651690ada
Flat is good

git-svn-id: svn+ssh://beta.visl.sdu.dk/usr/local/svn/repos/visl/tools/vislcg3/trunk@10034 cb2587b3-b7ff-0310-8c81-a2a651690ada