Log Message:
Changes 2.7.11:
General:
* Our bundled libgadu should now build on HP-UX.
* Fix some instances of file transfers never completing.
Pidgin:
* Sort by Status no longer causes buddies to move around when you click them.
* Fix embedding in the system tray on older GTK+ releases (such as on CentOS
  5.5 and older Fedora).
* No longer require libstartup-notification for startup notification support.
  GTK+ has included support for years, so use it instead.
AIM:
* Fix a bug where some buddies from your buddy list might not show up.
  Affected non-English ICQ users the most.
* Send keepalives for all types of network connections. Will hopefully make
  chat rooms more reliable.
MSN:
* Fix bug that prevented added buddies to your buddy list in certain
  circumstances.
MXit:
* MXit plugin and reported client version now follow the libpurple version.
* Don't try to request profile information for non-user contacts.
* Allow Re-Invite for contacts in Deleted or Rejected state.
* Ensure we don't send packets too fast to the MXit server and trigger its
  flood-detection mechanism. Also increased the internal packet queue to 32
  packets.
XMPP:
* Fix building on platforms with an older glib (inadvertantly broken in 2.7.10).
* Don't treat the on-join status storms as 'new arrivals'.
* Extend the /join command to support room JIDs, enabling you to join a room on
  any server.
* Add support for receiving a limited amount of history when joining a room
  (not currently supported by Pidgin and Finch).
Yahoo!/Yahoo! JAPAN:
* Fix CVE-2011-1091, denials of service caused by NULL pointer dereferences due
  to improper handling of malformed YMSG packets.