Updated cmake files to have find_package with Devlopment.Module to
make build work both locally and from cibuildwheel.
Added set Python_LIBRARIES="-Wl,--unresolved-symbols=ignore-all"
in case when it is not set (in manylinux) as lipython not found.
Added RPATH to be '$ORIGIN/libs:$ORIGIN' for all shared library
be discoverable.
Serge Rabyking
Jean-Paul Chaput
Robert Taylor