Re-running autogen.sh

[David Holmes]

A couple of changesets in the past day have updated the generated 
configure script. But when I try to run configure it complains that the 
sources are newer than the generated files. AFAICS that was not the case 
based on the time stamps and I even did a touch but to no avail. I had 
to re-run autogen.sh myself (which then causes a merge conflict the next 
time they change).

David