Changed handling of lower and upper in spg(), BBoptim(), and
   multiStart() so they must be specified in those arguments and 
not as part of projectArgs.
Fixed expansion of scalar upper and lower, which did not happen in 
   some cases.
Allowed for the possibility that argument project in spg() could be a
   function as well as a character string.
Added files in inst/slowTests.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/optimizer@882 edb9625f-4e0d-4859-8d74-9fd3b1da38cb