Ensure that the project, framework, component, and variable names are
lower than max lengths. This is a follow-on to
992a8e8297f7f044ef3b30bfc235566d43d68cb5, per discussion on
https://github.com/open-mpi/ompi/pull/5642.
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>