Message2677

2.3 has a couple issues preventing compile, after a few recent merges from trunk. This patch applied against r3140 will fix the compile errors:

o Merge the original slots gderived-defs change (r2974) from trunk. A followup fix to derived slots definitions was merged from trunk, but this was forgotten
o reran gderived.py and gexpose.py, with the random module temporarily uncommented out of the mappings file (touches PyBooleanDerived, PyRandom and PyRandomDerived)
o fixed the PyRandom imports broken as of r3139