issue #198 Test case for op_mov

tests/comptests/01_mov.lua

@@ -0,0 +1,7 @@
+f = compiler.load("local a, b, c = 4.2, true, 'hi' return a, b, c")
+local z = 62
+local a,b,c,d = f()
+assert(z == 62)
+assert(a == 4.2)
+assert(b == true)
+assert(c == 'hi')