[Libreoffice] [PATCH] update configure.in

[Peter Foley]

This patch updates configure.in using recomendations from autoupdate 
2.68.
It also raises the required version of autoconf from 2.50 to 2.58
because versions of autoconf less then 2.58 don't work with the current 
configure.in.
It also moves the generation of ooo.lst next to the other generated files 
so that config.status is only generated once.