Backport oqgraph from lp:~andymc73/oqgraph/10.0-oqgraph-varchar -r3697
Compatibility fixes to make 10.0 oqgraph v3 work with 5.5.32
Remove obsolete tests from oqgraph v2
Fixes needed to make the oqgraph v3 MTR tests work in 5.5.32 tree. NOT to be applied to bzr branch!
Merge pull request #1 from andymc73/compat_fixes_5_5_32_tests

Compat fixes 5 5 32 tests