Fix regression of 0bf8b8a1 (bug 9884)

Fix regression of 0bf8b8a1 (bug 9884)

Unfortunately the footmisc package does not work together with hyperref:
Before 0bf8b8a1, a footnote in a section title was created as a link in pdf
outpout, after 0bf8b8a1 ist was no link anymore. For now we revert to the old
code, and wait until the footmisc and hyperref packages are made compatible.