testbed is now functional

I would like to make sure some _ tests are
passing, however I have to think of a nice
way to grab debug output and compare it
nicely.  Some require NReg == 3, that is a
pain in the ass.  Maybe they can be changed
to work for the full register set.

lisc/test/_fix1.ssa

@@ -0,0 +1,15 @@
+function $test() {
+@start
+	%x =w copy 1
+@loop
+	jnz %x, @noz, @isz
+@noz
+	%x =w copy 0
+	jmp @end
+@isz
+	%x =w copy 1
+	jmp @loop
+@end
+	%z =w add 10, %x
+	ret
+}