folding support

[Jens]

vim uses z for folding commands. But vimpager maps z buffer local. As a workaround I have to start vimpager like this:
vimpager -c ":unmap <buffer> z"
Could you please not steal z or at least map it globally, so I can unmap it the rc file. This would be nice.

vimpager is a great help anyway. Many thanks for your efforts!