auto merge of #10179 : alexcrichton/rust/rt-improvements, r=cmr

This fleshes out the io::file module a fair bit more, adding all of the functionality that I can think of that we would want. Some questions about the representation which I'm curious about:

* I modified `FileStat` to be a little less platform-agnostic, but it's still fairly platform-specific. I don't want to hide information that we have, but I don't want to depend on this information being available. One possible route is to have an `extra` field which has all this os-dependent stuff which is clearly documented as it should be avoided.

* Does it make sense for directory functions to be top-level functions instead of static methods? It seems silly to import `std::rt::io::file` and `std::rt::io::File` at the top of files that need to deal with directories and files.

Author: bors

mk/tests.mk

@@ -517,8 +517,8 @@ CTEST_BUILD_BASE_rpass = run-pass
 CTEST_MODE_rpass = run-pass
 CTEST_RUNTOOL_rpass = $(CTEST_RUNTOOL)
 
-CTEST_SRC_BASE_rpass-full = run-pass-full
-CTEST_BUILD_BASE_rpass-full = run-pass-full
+CTEST_SRC_BASE_rpass-full = run-pass-fulldeps
+CTEST_BUILD_BASE_rpass-full = run-pass-fulldeps
 CTEST_MODE_rpass-full = run-pass
 CTEST_RUNTOOL_rpass-full = $(CTEST_RUNTOOL)
 
@@ -673,7 +673,7 @@ PRETTY_DEPS_pretty-rfail = $(RFAIL_TESTS)
 PRETTY_DEPS_pretty-bench = $(BENCH_TESTS)
 PRETTY_DEPS_pretty-pretty = $(PRETTY_TESTS)
 PRETTY_DIRNAME_pretty-rpass = run-pass
-PRETTY_DIRNAME_pretty-rpass-full = run-pass-full
+PRETTY_DIRNAME_pretty-rpass-full = run-pass-fulldeps
 PRETTY_DIRNAME_pretty-rfail = run-fail
 PRETTY_DIRNAME_pretty-bench = bench
 PRETTY_DIRNAME_pretty-pretty = pretty

src/compiletest/compiletest.rs

@@ -17,6 +17,7 @@ extern mod extra;
 
 use std::os;
 use std::rt;
+use std::rt::io::fs;
 
 use extra::getopts;
 use extra::getopts::groups::{optopt, optflag, reqopt};
@@ -247,7 +248,7 @@ pub fn make_tests(config: &config) -> ~[test::TestDescAndFn] {
     debug!("making tests from {}",
            config.src_base.display());
     let mut tests = ~[];
-    let dirs = os::list_dir_path(&config.src_base);
+    let dirs = fs::readdir(&config.src_base);
     for file in dirs.iter() {
         let file = file.clone();
         debug!("inspecting file {}", file.display());