Merge from vendor branch TNF:

Merge from vendor branch TNF:
Import msn-pecan version 0.0.17.

msn-pecan is a fork of the MSN plug-in from Pidgin. Compared to Pidgin's
official MSN plug-in:

  * Faster log-in
  * Fewer connection issues
  * Fewer crashes
  * Experimental direct connection support (fast file transfers)
  * Server-side storage for display names (private alias)
  * Support for handwritten messages (read-only)

Other features:

  * Support for personal status messages
  * Support for offline messaging (read-only)
  * Send custom emoticons (Pidgin >= 2.5)