Fix for reworking the order of include and library paths - (Barnaby Robson)
Fix for reworking the order of include and library paths - (Barnaby Robson)

Barnaby Robson reports that while trying to build PyImbase with a non system python version and boost python library the custom boost python directories ahead of the python directories because the python directories might just be the system directories which might contain a different boost python library.
https://github.com/openexr/openexr/pull/8
This is a manual fix since the pull request was out of sync

oglops/PyIlmBase,oglops/PyIlmBase,oglops/IlmBase,oglops/IlmBase,oglops/OpenEXR,oglops/OpenEXR,oglops/PyIlmBase,oglops/OpenEXR,oglops/IlmBase,oglops/PyIlmBase