tell that additive constant is printed (since r2357)

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2362 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
implement stressplot for pRDA

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2364 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
stressplot implemented for partial capscale and cca

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2365 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
you need u %*% t(v) instead of only u for stressplot (done only for rda now)

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2366 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
rectify misleading text in printed output (null, not confidence limit in anosim, mantel)

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2367 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
dist(u%*%t(v)) implemented for CCA similarly as r2366 for RDA

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2368 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Merge branch 'r-forge-svn-local'