remmoved the Heisenberg, i.e. the error reported by valgrind that happended only under valgrind

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ff@149 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
the actual fix for the valgrind trouble, plus removing dependency on int64 from test code in examples

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ff@150 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
removed dummy

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ff@151 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
finally the valgrind fix

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ff@152 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
clone(), clone.default() and clone.list() are also exported from ff (wish of CRAN maintainers)
and several compiler warnings have been removed

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ff@153 edb9625f-4e0d-4859-8d74-9fd3b1da38cb