2.10.7:

* Main: Cleanup data structures in the destructor, preventing leaks, and allowing 
  a second instantiation. (Bug #383340 from Christopher Raine).
* Build: Fix build with SUN Workshop 11
  (Marko Anastasov, Bug #395572 from Tim Mooney)
* Documentation:
  - glade/libglade tutorial section: Clarification.
  (Martin Nordholts, Bug #387708)
  - Added SizeGroup documentation.
  (Murray Cumming)