revert r2412-3: there should be no pCCA component in predict type='response' or 'working'

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2416 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
do not warn about ignoring pCCA component, because that is the documented intention

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2417 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
fitted.rda,cca,capscale can return the pCCA component

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2418 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Merge branch 'r-forge-svn-local'