Finished simple simplex method

I finished M-task simplex method.

I created internal format for tasks that would be solved only by simplex method. This format allow using only real variables. No integer, no parametric. It is simple clone of more advenced format for package "LinProg/P" (http://www.bookworld.ru/Whitebear/LPSample/help.htm).
Sorry only Russian help. Coming soon English.

I also added parser for MPS format. May will be LP parser. How knows?