Fix compendium build with latex from strech
* doc/manual/fdl-book.tex, doc/manual/fdl.tex, doc/manual/gpg4win-compendium-de.tex, doc/manual/gpg4win-compendium-en.tex, doc/manual/gpg4win-compendium-se.tex, doc/manual/hyperlatex.sty: Replace \tt and \bf with expanded versions. * doc/manual/gpg4win-compendium-de.tex, doc/manual/gpg4win-compendium-en.tex: Replace makeindex by imakeindex.
This fixes errors caused by finally erroring out on long depracted
commands.