added ufunc trig unit tests
added constants (pi & e) to numbarray
moved binary trig ufuncs hypot and arctan2 out of unary ufuncs
added imports to _init__.py
added division to numbarray
added more ufuncs and tests
added codegen fix
refactored unit tests.
added the ability to call numpy functions (jay)
renamed test_unary_ufunc to unary_ufunc_test so unittest does not run on
it
renamed test_binary_ufunc to binary_ufunc_test so unittest does not run
on it
added ufuncs rint and fabs found in npy_math to numba
added unittests
added note about 'f2' datatypes not working
Merging f303b5c: removed the + in vectorized+_body in codegen.py
Merge branch 'array_object2' into array_object

Conflicts:
	numba/array/array.py
	numba/array/codegen.py
	numba/array/examples.py
	numba/array/test_ufuncs.py
	numba/array/ufuncs.py