add template class Argp for reading arguments with parameter and add unit tests for Arg* template classes
add template class Argp for reading arguments with parameter and add unit tests for Arg* template classes

git-svn-id: 40192aece4a9e6664bc9a93aa558322db432a344@1077 15ae5fad-cc11-0410-8fac-bce609e504b0

maekitalo/cxxtools,OlafRadicke/cxxtools,OlafRadicke/cxxtools,OlafRadicke/cxxtools,maekitalo/cxxtools,maekitalo/cxxtools,maekitalo/cxxtools,OlafRadicke/cxxtools