Fix a RPATH issue if -DOCE_INSTALL_LIB_DIR is absolute.
Fix a RPATH issue if -DOCE_INSTALL_LIB_DIR is absolute.

finetjul/oce,BenoitPerrot/oce,Tridify/oce,BenoitPerrot/oce,mathstuf/oce,tpaviot/oce,Tech-XCorp/oce,mathstuf/oce,mathstuf/oce,heartvalve/oce,Tech-XCorp/oce,finetjul/oce,Tech-XCorp/oce,EvgeneOskin/oce,tpaviot/oce,tpaviot/oce,heartvalve/oce,finetjul/oce,BenoitPerrot/oce,EvgeneOskin/oce,EvgeneOskin/oce,BenoitPerrot/oce,Tridify/oce,heartvalve/oce,finetjul/oce,Tech-XCorp/oce,EvgeneOskin/oce,tpaviot/oce,Tridify/oce,heartvalve/oce,Tech-XCorp/oce,finetjul/oce,Tridify/oce,BenoitPerrot/oce,EvgeneOskin/oce,Tridify/oce,heartvalve/oce,tpaviot/oce,mathstuf/oce,mathstuf/oce