Add pycuda python egg.

component/pycuda/buildout.cfg

+[buildout]
+extends =
+  ../numpy/buildout.cfg
+
+parts = 
+  pycuda
+
+[pycuda-env]
+<= numpy-env
+
+[pycuda]
+recipe = zc.recipe.egg:custom
+eggs = pycuda
+environment = pycuda-env
+setup-eggs =
+  ${numpy:egg}