[Osi] set row solution (activities)

[Lou Hafer]

Matt,

	Osi.setColSolution and Osi.setRowPrice will set the column and row
solution, respectively.  Row activity should follow from setColSolution.

	Based on the Osi unit test, OsiClp ignores imposed row and column 
solutions (at least, they are not immediately reflected in the results returned 
for row activity and reduced costs).
	
						Lou