Fixed up compress and compress.val functionality in tabfreq and tabfreq.svy.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/tab@48 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Quantile decimal points fix.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/tab@49 edb9625f-4e0d-4859-8d74-9fd3b1da38cb