Rename Cretonne to Cranelift!

cranelift/docs/callex.clif

@@ -0,0 +1,13 @@
+test verifier
+
+function %gcd(i32 uext, i32 uext) -> i32 uext system_v {
+    fn0 = %divmod(i32 uext, i32 uext) -> i32 uext, i32 uext
+
+ebb1(v0: i32, v1: i32):
+    brz v1, ebb2
+    v2, v3 = call fn0(v0, v1)
+    return v2
+
+ebb2:
+    return v0
+}