• Update to 5.0 release

Changes since 5.0rc2:
New features:

• Sending LCP Time-Remaining packet implemented.

Bugfixes:

• Fixed MPPC options loss on link disconnect.
• Fixed crash on PPTP CDN sending error.
• Fixed incorrect IPCP options reject processing.
• Fixed MP SHORTSEQ option.
• Fixed packet order on accepting outgoing PPTP call.

Submitted by: mav (maintainer)