biprobit.time, twinlm.time, bptwin.time updated with 'time' output

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1224 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
bumped to version 0.2.8.6

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1225 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
roxygen update

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1226 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Fixed some summary mess-up for biprobit with eqmarg=FALSE

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1227 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
debug code removed

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/lava@1228 edb9625f-4e0d-4859-8d74-9fd3b1da38cb