Fixed other instances of the same "binding of NaN changed" bug.


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dplr@720 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
default change made to detrend.series. Language to Rd files.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dplr@721 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
small note in detrend.series.R

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dplr@722 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Reverted changes to default of constrain.modnegexp argument made in r721.
Reasoning: match.arg(foo) checks that the user gives a valid value for
foo (must expand to or match one of the options) and returns the first
character string from the default of foo if the user gives no
value. So, what looks like a multi-string default becomes one string.


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dplr@723 edb9625f-4e0d-4859-8d74-9fd3b1da38cb