use paste0()

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1066 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
use paste0() + cosmetic

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1067 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Experimental: new optional argument  "indepC.maybe" -- and more paste0()

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nacopula@1068 edb9625f-4e0d-4859-8d74-9fd3b1da38cb