Remove deprecated functionality

This removes a large array of deprecated functionality, regardless of how
recently it was deprecated. The purpose of this commit is to clean out the
standard libraries and compiler for the upcoming alpha release.

Some notable compiler changes were to enable warnings for all now-deprecated
command line arguments (previously the deprecated versions were silently
accepted) as well as removing deriving(Zero) entirely (the trait was removed).

The distribution no longer contains the libtime or libregex_macros crates. Both
of these have been deprecated for some time and are available externally.

src/libstd/rt/util.rs

@@ -19,7 +19,7 @@ use libc::{self, uintptr_t};
 use os;
 use slice;
 use str;
-use sync::atomic;
+use sync::atomic::{mod, Ordering};
 
 /// Dynamically inquire about whether we're running under V.
 /// You should usually not use this unless your test definitely
@@ -47,7 +47,7 @@ pub fn limit_thread_creation_due_to_osx_and_valgrind() -> bool {
 
 pub fn min_stack() -> uint {
     static MIN: atomic::AtomicUint = atomic::ATOMIC_UINT_INIT;
-    match MIN.load(atomic::SeqCst) {
+    match MIN.load(Ordering::SeqCst) {
         0 => {}
         n => return n - 1,
     }
@@ -55,7 +55,7 @@ pub fn min_stack() -> uint {
     let amt = amt.unwrap_or(2 * 1024 * 1024);
     // 0 is our sentinel value, so ensure that we'll never see 0 after
     // initialization has run
-    MIN.store(amt + 1, atomic::SeqCst);
+    MIN.store(amt + 1, Ordering::SeqCst);
     return amt;
 }