Added opcodes for arithmetic with K operands

Added opcodes for all seven arithmetic operators with K operands
(that is, operands that are numbers in the array of constants of
the function). They cover the cases of constant float operands
(e.g., 'x + .0.0', 'x^0.5') and large integer operands (e.g.,
'x % 10000').

ljumptab.h

@@ -51,6 +51,13 @@ static void *disptab[] = {
 &&L_OP_POWI,
 &&L_OP_DIVI,
 &&L_OP_IDIVI,
+&&L_OP_ADDK,
+&&L_OP_SUBK,
+&&L_OP_MULK,
+&&L_OP_MODK,
+&&L_OP_POWK,
+&&L_OP_DIVK,
+&&L_OP_IDIVK,
 &&L_OP_BANDK,
 &&L_OP_BORK,
 &&L_OP_BXORK,