v1.3.9

• Add xl2tpd-control man pages (Samir Hussain)
• Update spec file with newest Soure0 and version (Samir Hussain)
• Update License file (Samir Hussain)
• Display PID for call in the logs (Samir Hussain)
• Use left shift rather than pow() function. (Samir Hussain)
• Enable Travis integration (Samir Hussain)
• Remove unnecessary casting of malloc() results (Andrew Clayton)
• Remove an unused line of code in init_config() (Andrew Clayton)
• Fix some undefined behaviour in read_result() (Andrew Clayton)
• Fix feature test macro deprecation warnings (Andrew Clayton)