Security update to version 1.4.24.

ChangeLog:

- BUG/MAJOR: backend: consistent hash can loop forever in certain circumstances
- BUG/MEDIUM: checks: disable TCP quickack when pure TCP checks are used
- MEDIUM: protocol: implement a "drain" function in protocol layers
- BUG/CRITICAL: fix a possible crash when using negative header occurrences
Note update of net/haproxy