Todo 2

[anthonytasca]

• [ ] Fix compilation warnings (https://travis-ci.org/cvvergara/pgrouting/jobs/325574762#L1674)
• [ ] Turn proof of concepts into pgtap tests
• [ ] Cleanup template comments (https://github.com/anthonytasca/pgrouting/blob/lineGraphFull/src/lineGraph/lineGraphFull.c#L31)

[anthonytasca]

split these into separate issues