add subst method to cxxtools::Regex for substituting regular expressions with something
Merge branch 'master' of https://github.com/maekitalo/cxxtools
Merge branch 'master' of https://github.com/maekitalo/cxxtools
Merge branch 'master' of https://github.com/maekitalo/cxxtools
split connect method of rpc clients into prepareConnect and connect and delay instantation of impl classes