2.8.11:

* Support optional ifdef parameters in the .hg macros, 
  to allow, for instance the --enable-atk=no option, 
  to disable the build and use of the atkmm API, 
  for use in embedded environments.
  (Johannes Schimd, Murray Cuming, Openismus)

2.8.10:

* Build: Added the --enable-api-default-signal-handlers option, for use in 
  embedded environments that have reduced resources. See configure --help 
  for the other subsets.