* If the 'nohyper' option is set, then we pass 'hyperfootnotes=false' to the
'hyperref' package if it's loaded later. Otherwise, the hyperref package
will overwrite our redefinitions of the footnote-related commands.
git-svn-id: https://tufte-latex.googlecode.com/svn/trunk@129 516e2f36-ce3a-0410-bea4-1d4a03f5df72