Implemented (Jit) labels and transitions
New Jit compilative command 'Jump' carries out transition
to the label designated in argument. Jit compilative command
'label' declares new label which can be transtitioned
(Example: label x         )
(         ... your code...)
(         jump x          )
Another new jit compilative commands: 'ja', 'jae', 'jb', 'jbe',
'je', 'jne' carries out conditional transitions. They check
conditional on the top of stack and next from top element.  JA - jump if above.
JAE - jump if above ot equal. JB - jump if below. JBE - jump if
below or equal. JE - jump if equal. JNE - jump if not equal.