Added post-install action which writes python stubs for IECore C++ ops. Added INSTALL_IECORE_OP_PATHS option for where to install op stubs. Added INSTALL_IECORE_OPS option for describing which C++ ops to install stubs for.
Added post-install action which writes python stubs for IECore C++ ops.
Added INSTALL_IECORE_OP_PATHS option for where to install op stubs.
Added INSTALL_IECORE_OPS option for describing which C++ ops to install stubs for.

appleseedhq/cortex,danieldresser/cortex,davidsminor/cortex,goddardl/cortex,lento/cortex,lento/cortex,hradec/cortex,goddardl/cortex,davidsminor/cortex,lento/cortex,davidsminor/cortex,appleseedhq/cortex,danieldresser/cortex,goddardl/cortex,appleseedhq/cortex,davidsminor/cortex,hradec/cortex,hradec/cortex,danieldresser/cortex,danieldresser/cortex