debug symbols for package ray

 Ray is a parallel software that computes de novo genome assemblies with
 next-generation sequencing data.
 Ray is written in C++ and can run in parallel on numerous interconnected
 computers using the message-passing interface (MPI) standard.
 Included:
  - Ray de novo assembly of single genomes
  - Ray Méta de novo assembly of metagenomes
  - Ray Communities microbe abundance + taxonomic profiling
  - Ray Ontologies gene ontology profiling