port r62138 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62139 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62137 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62141 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62142,3 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62144 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62145 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62146 00db46b3-68df-0310-9c12-caf00c1e9a41
typo

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62148 00db46b3-68df-0310-9c12-caf00c1e9a41