turn test files in one function definition

lisc/test/live.ssa

@@ -5,15 +5,17 @@
 #
 # nothing should ever be live at the entry
 
-@start
+function $test {
+ @start
 	%b =w copy 0
 	%x =w copy 10
 	jnz 0, @loop, @left
-@left
+ @left
 	jmp @inloop
-@loop
+ @loop
 	%x1 =w add %x, 1
-@inloop
+ @inloop
 	%b1 =w add %b, 1
-@endloop
+ @endloop
 	jmp @loop
+}