maps have == so maps should work as map keys.

fix tests of bad map keys to use slices instead.

R=r
DELTA=7  (0 added, 1 deleted, 6 changed)
OCL=31123
CL=31145

test/cmp3.go

@@ -10,7 +10,7 @@ func use(bool) { }
 
 func main()
 {
-	var b map[string]int;
+	var b []int;
 	var ib interface{} = b;
 	use(ib == ib);
 }

test/cmp5.go

@@ -8,7 +8,7 @@ package main
 
 func main()
 {
-	var b map[string]int;
+	var b []int;
 	var ib interface{} = b;
 	var m = make(map[interface{}] int);
 	m[ib] = 1;

test/convert.go

@@ -6,11 +6,10 @@
 
 package main
 
-import "unsafe"
+import "reflect"
 
 func typeof(x interface{}) string {
-	val, typ, indir := unsafe.Reflect(x);
-	return typ;
+	return reflect.Typeof(x).String();
 }
 
 func f() int {

test/golden.out

@@ -6,7 +6,7 @@ throw: interface compare
 panic PC=xxx
 
 =========== ./cmp3.go
-comparing uncomparable type map[string] int
+comparing uncomparable type []int
 throw: interface compare
 
 panic PC=xxx
@@ -18,7 +18,7 @@ throw: interface hash
 panic PC=xxx
 
 =========== ./cmp5.go
-hash of unhashable type map[string] int
+hash of unhashable type []int
 throw: interface hash
 
 panic PC=xxx