replace CMath::swap with std::swap (#4187)
replace CMath::swap with std::swap (#4187)


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