as_backend_type fails with Lucid

[Anders Logg]

The la unit tests are failing on the Lucid buildbot with the following error message:

*** Error: Unable to extract backend type for Vector.
*** Reason: This apparently doesn't work for uBLAS...
*** Where: This error was encountered inside dolfin/swig/la/post.i.

For some reason the function _has_type_uBLASVector() returns False when it gets a Vector initialized with the backend set to
uBLAS. The reason is likely an old SWIG version (2.0.3)?

To reproduce:

from dolfin import *
parameters.linear_algebra_backend = "uBLAS"
x = Vector()
print as_backend_type(x)

[Johan Hake (johan-hake)]

This has been fixed.