Added new constructor that initializes GSimpleAssignment from an array and a function to swap the A and B sets in a GSimpleAssignment.  Also declared the test routine for linear assignment.
Added new constructor that initializes GSimpleAssignment from an array and a function to swap the A and B sets in a GSimpleAssignment.  Also declared the test routine for linear assignment.


kslazarev/waffles,kslazarev/waffles,kslazarev/waffles,kslazarev/waffles,kslazarev/waffles