On Unix, install CMake files under lib/oce-$version instead of lib/OCE-$version
On Unix, install CMake files under lib/oce-$version instead of lib/OCE-$version

Both are looked for by CMake, but DRAWEXE plugins are already installed into
the former, so put CMake files there too.

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