fix(filib/q_scan.c): unused return value warnings
feat(realpaver/rp_interval): use filib
doc(tools/README.md): update tool build instructions
doc: update OCaml tools part in OSX and Ubuntu docs
fix(realpaver/rp_interval): bug in matan
fix(realpaver/rp_interval): fix warning
fix(realpaver/rp_interval): fix warning