2.12.4:

* gmmproc improvements:
  - gmmproc: Allow () in property and signal docuemntation.
  - gmmproc: Do not try to remove a common prefix from the 
  C enam values, if there is no common prefix.
  - enum.pl: Allow whitespace in front of an enum typedef. 
  (Daniel Elstner)
  - enum.pl: Fix an infinite loop.

* Glib::Value: When registering float parameters, use 
  G_MAXFLOAT as the minimum, instead of G_MINFLOAT.
  Likewise for doubles.
  (Oliver Nittka)