test: Un-xfail some working tests

Author: brson

src/test/bench/shootout/fasta.rs

@@ -1,6 +1,3 @@
-// xfail-stage0
-// xfail-stage1
-// xfail-stage2
 /* -*- mode: rust; indent-tabs-mode: nil -*-
  * Implementation of 'fasta' benchmark from
  * Computer Language Benchmarks Game

src/test/run-pass/iter-ret.rs

@@ -1,6 +1,3 @@
-// xfail-stage0
-// xfail-stage1
-// xfail-stage2
 iter x() -> int {
 }
 

src/test/run-pass/lib-rand.rs

@@ -1,6 +1,3 @@
-// xfail-stage0
-// xfail-stage1
-// xfail-stage2
 // -*- rust -*-
 
 use std;

src/test/run-pass/lib-str-buf.rs

@@ -1,17 +1,14 @@
-// xfail-stage0
-// xfail-stage1
-// xfail-stage2
 // -*- rust -*-
 
 use std;
 import std::str;
 
 fn main() {
     auto s = "hello";
-    auto sb = str.rustrt.str_buf(s);
-    auto s_cstr = str.rustrt.str_from_cstr(sb);
-    assert (str.eq(s_cstr, s));
-    auto s_buf = str.rustrt.str_from_buf(sb, 5u);
-    assert (str.eq(s_buf, s));
+    auto sb = str::buf(s);
+    auto s_cstr = str::str_from_cstr(sb);
+    assert (str::eq(s_cstr, s));
+    auto s_buf = str::str_from_buf(sb, 5u);
+    assert (str::eq(s_buf, s));
 }
 

src/test/run-pass/utf8.rs

@@ -1,6 +1,5 @@
 // xfail-stage0
-// xfail-stage1
-// xfail-stage2
+
 fn main() {
   let char yen = '¥';         // 0xa5
   let char c_cedilla = 'ç';   // 0xe7

src/test/run-pass/utf8_chars.rs

@@ -1,6 +1,5 @@
 // xfail-stage0
-// xfail-stage1
-// xfail-stage2
+
 use std;
 import std::str;
 import std::vec;

src/test/run-pass/vec-alloc-append.rs

@@ -1,12 +1,9 @@
-// xfail-stage0
-// xfail-stage1
-// xfail-stage2
 // This is a test for issue #109.
 
 use std;
 
 fn slice[T](vec[T] e) {
-  let vec[T] result = std::vec.alloc[T](1 as uint);
+  let vec[T] result = std::vec::alloc[T](1 as uint);
   log "alloced";
   result += e;
   log "appended";