[Merge] lp:~clint-fewbar/ubuntu/natty/libdbi-drivers/fix-dlopen into lp:ubuntu/libdbi-drivers

[Colin Watson]

I made a couple of adjustments to debian/buildtests/Makefile that made things work better for me - please see the main natty branch for these.
-- 
https://code.launchpad.net/~clint-fewbar/ubuntu/natty/libdbi-drivers/fix-dlopen/+merge/38770
Your team Ubuntu Sponsors Team is requested to review the proposed merge of lp:~clint-fewbar/ubuntu/natty/libdbi-drivers/fix-dlopen into lp:ubuntu/libdbi-drivers.