test: xfail a bunch of tests that are incorrectly reading os::args()[1]

src/test/bench/shootout-fannkuch-redux.rs

@@ -1,3 +1,5 @@
+// xfail-test reading from os::args()[1] - bogus!
+
 use std::from_str::FromStr;
 use std::os;
 use std::vec::MutableVector;

src/test/bench/shootout-fasta-redux.rs

@@ -1,3 +1,5 @@
+// xfail-test reading from os::args()[1] - bogus!
+
 use std::cast::transmute;
 use std::from_str::FromStr;
 use std::libc::{FILE, STDOUT_FILENO, c_int, fdopen, fputc, fputs, fwrite, size_t};

src/test/bench/shootout-mandelbrot.rs

@@ -1,3 +1,5 @@
+// xfail-test reading from os::args()[1] - bogus!
+
 use std::cast::transmute;
 use std::from_str::FromStr;
 use std::libc::{STDOUT_FILENO, c_int, fdopen, fputc};

src/test/bench/shootout-nbody.rs

@@ -1,3 +1,5 @@
+// xfail-test reading from os::args()[1] - bogus!
+
 use std::from_str::FromStr;
 use std::os;
 

src/test/bench/shootout-spectralnorm.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// xfail-test reading from os::args()[1] - bogus!
+
 use std::from_str::FromStr;
 use std::os;
 use std::vec;