Linear operators redesigned (log-det)
Add options for malloc replacement
Fix atlas lapack detection on Fedora
further CSVFile / modshogun conversion
Moved RefCount to own file and used that class for ref counting instead of a plain int in the classes SGIO,Version and Parallel
Merge pull request #1399 from van51/feature/refcount

Made thread-safe refcounting in SGIO, Version and Parallel
Merge pull request #1403 from votjakovr/feature/numerical_integration

Improve memory usage in quadgk integration method
Merge pull request #1404 from lambday/feature/log_determinant

Linear operators redesigned (log-det)