Gimp# is going to depend on Mono 1.1.x

Until now Gimp# depended on Mono 1.0.x. However as of release 0.8 (not out yet) Gimp# will depend on Mono 1.1.x and later on Mono 1.2. I will try to keep it compatible with Mono 1.0.x until 1.2 is released, but there are no guaranties.