Remove deprecated UnitCircle{Mesh} (fixes Issue #201)
Merge branch 'garth/fix-issue-201' into garth/fix-issue-203

Fix old code in book test.

Conflicts:
	dolfin/generation/dolfin_generation.h
	dolfin/swig/shared_ptr_classes.i
Merge branch 'garth/fix-issue-203' into next