Log Message:
Update to 2.8.1:

* bugs fixed
+ Merged the fixes from the toolbar-rework branch (Federico Mena Quintero)
+ Fix warnings when toolbars are destroyed (Federico)
+ Fix GDK interaction problem when running a control in same process as the
  container (Gustavo)
+ Fix include of wrong i18n header files (Jonathan Blandford)
+ Don't install files from examples (Gustavo)
+ Dock item a11y fix (Kjartan Maraas)
+ More toolbar fixes (Arvind Samptur)
+ Toolbar theme rendering fixes (Benjamin Berg, JP Rosevear)

* misc.
+ Remove redundant AC_SUBST's in configure.in  (Tomasz Kłoczko)
+ Add Bonobo component browser tool (Rodrigo Moya)
+ Deprecate pack-end behavior and add a space type for separators.
  (Marco Pesenti Gritti)