Fix automake linkage for IlmImfUtil
Fix automake linkage for IlmImfUtil

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