Jit compilative comparison commands implemented.

Implemented jit compilative commands "l" (less),
"le" (less or equal), "m" (more), "me" (more or equal),
"e" (equal), "ne" (not equal). That commands compare
top of the stack and second element in the stack, then
it pop both of elements and push comparison result into
stack (1 - true, 0 - false).