Eliminated passing par to plot and other plotting functions. It is now 
set in tfplot or tfOnePlot. (It was probably not working previously.)
Removed mar as an argument to tfplot (previously deprecated). Margins
   must now be passed by par=list(mar=...).

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/tsanalysis@152 edb9625f-4e0d-4859-8d74-9fd3b1da38cb