Add morpher::stack_rw.
	
	* olena/tests/morphers/stack_rw_morpher.cc: New.
	* olena/tests/morphers/Makefile.am: Update.
	* olena/oln/morpher/stack_rw.hh: New.
	* olena/oln/Makefile.am: Update.
	* olena/oln/debug/print.hh (print): Store loop 2D bounds.
	* olena/oln/core/abstract/functions.hh (fun_rw): New.
	* olena/oln/morpher/two_way.hh (ima_): Change type to pointer.
	(two_way): New ctor for class value::two_way.
	(read_, write_): New methods.
	(operator, value): Call read_.
	(operator=): Call write_.
	* olena/oln/morpher/stack.hh (N): New.
	* olena/oln/value/two_way.hh (two_way): New ctor decl.
	(ima_): Change type to pointer.
	(read_, write_): New method decls.



git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@695 4aad255d-cdde-0310-9447-f3009e2ae8c0