Search for k-best in factor graph #3526

Job	Run time
ubuntu-clang-deprecated Debug	3m 26s
ubuntu-clang-deprecated Release	3m 6s
ubuntu-clang-quaternions Debug	3m 2s
ubuntu-clang-quaternions Release	3m 2s
ubuntu-clang-tbb Debug	3m 40s
ubuntu-clang-tbb Release	3m 38s
ubuntu-clang-cayleymap Debug	2m 56s
ubuntu-clang-cayleymap Release	3m 29s
ubuntu-clang-system-libs Debug	3m 2s
ubuntu-clang-system-libs Release	3m 22s
ubuntu-no-boost Debug	2m 31s
ubuntu-no-boost Release	2m 27s
ubuntu-no-unstable Debug	1m 15s
ubuntu-no-unstable Release	1m 11s
ubuntu-build-examples Debug	3m 23s
ubuntu-build-examples Release	2m 58s
	46m 28s

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