add unit label to the unit tests this allows running all the unit tests with: ctest -L unit
add unit label to the unit tests
this allows running all the unit tests with: ctest -L unit

besser82/shogun,shogun-toolbox/shogun,lisitsyn/shogun,geektoni/shogun,besser82/shogun,shogun-toolbox/shogun,shogun-toolbox/shogun,geektoni/shogun,besser82/shogun,lambday/shogun,shogun-toolbox/shogun,shogun-toolbox/shogun,sorig/shogun,geektoni/shogun,karlnapf/shogun,lambday/shogun,karlnapf/shogun,besser82/shogun,lambday/shogun,besser82/shogun,sorig/shogun,geektoni/shogun,sorig/shogun,geektoni/shogun,lambday/shogun,lambday/shogun,lisitsyn/shogun,karlnapf/shogun,besser82/shogun,lisitsyn/shogun,geektoni/shogun,sorig/shogun,lisitsyn/shogun,karlnapf/shogun,lisitsyn/shogun,lisitsyn/shogun,lambday/shogun,shogun-toolbox/shogun,karlnapf/shogun,sorig/shogun,sorig/shogun,karlnapf/shogun