moved some files around to conform to python best practicies

--HG--
rename : lib/baker.py => lib/baker/__init__.py
rename : lib/tools.py => lib/baker/tools.py
rename : lib/grid.py => lib/grid/__init__.py
rename : lib/smcqdelaunay.py => lib/grid/smcqdelaunay.py

bin/driver.py

@@ -5,7 +5,7 @@ from optparse import OptionParser
 
 import numpy as np
 
-from tools import rms, exact_func
+from baker.tools import rms, exact_func
 import grid
 
 

bin/grid_regular.py

@@ -3,10 +3,9 @@
 import sys
 import pickle
 
-from grid import simple_rect_grid, simple_random_grid
-from baker import run_baker
-
-from tools import smberror
+from grid        import simple_rect_grid, simple_random_grid
+from baker       import run_baker
+from baker.tools import smberror
 
 qfile = '/tmp/grid_regular.txt'