Remove a ton of public reexports

Remove most of the public reexports mentioned in #19253

These are all leftovers from the enum namespacing transition

In particular:

* src/libstd/num/strconv.rs
 * ExponentFormat
 * SignificantDigits
 * SignFormat
* src/libstd/path/windows.rs
 * PathPrefix
* src/libstd/sys/windows/timer.rs
 * Req
* src/libcollections/str.rs
 * MaybeOwned
* src/libstd/collections/hash/map.rs
 * Entry
* src/libstd/collections/hash/table.rs
 * BucketState
* src/libstd/dynamic_lib.rs
 * Rtld
* src/libstd/io/net/ip.rs
 * IpAddr
* src/libstd/os.rs
 * MemoryMapKind
 * MapOption
 * MapError
* src/libstd/sys/common/net.rs
 * SocketStatus
 * InAddr
* src/libstd/sys/unix/timer.rs
 * Req

[breaking-change]

5 files changed, 7 insertions, 5 deletions

diff --git a/src/libstd/sys/common/net.rs b/src/libstd/sys/common/net.rs
index 73da200e162..382f6875b28 100644
--- a/src/libstd/sys/common/net.rs
+++ b/src/libstd/sys/common/net.rs
@@ -8,8 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-pub use self::SocketStatus::*;
-pub use self::InAddr::*;
+use self::SocketStatus::*;
+use self::InAddr::*;
 
 use alloc::arc::Arc;
 use libc::{mod, c_char, c_int};
diff --git a/src/libstd/sys/unix/pipe.rs b/src/libstd/sys/unix/pipe.rs
index 26fd410a7a9..348b7cfad33 100644
--- a/src/libstd/sys/unix/pipe.rs
+++ b/src/libstd/sys/unix/pipe.rs
@@ -19,6 +19,7 @@ use prelude::*;
 use sys::{mod, timer, retry, c, set_nonblocking, wouldblock};
 use sys::fs::{fd_t, FileDesc};
 use sys_common::net::*;
+use sys_common::net::SocketStatus::*;
 use sys_common::{eof, mkerr_libc};
 
 fn unix_socket(ty: libc::c_int) -> IoResult<fd_t> {
diff --git a/src/libstd/sys/unix/tcp.rs b/src/libstd/sys/unix/tcp.rs
index dacd754582b..5c99ad1e0ce 100644
--- a/src/libstd/sys/unix/tcp.rs
+++ b/src/libstd/sys/unix/tcp.rs
@@ -21,6 +21,7 @@ use sys::{set_nonblocking, wouldblock};
 use sys;
 use sys_common;
 use sys_common::net;
+use sys_common::net::SocketStatus::Readable;
 
 pub use sys_common::net::TcpStream;
 
@@ -124,7 +125,7 @@ impl TcpAcceptor {
                 fd => return Ok(TcpStream::new(fd as sock_t)),
             }
             try!(net::await(&[self.fd(), self.inner.reader.fd()],
-                       deadline, net::Readable));
+                       deadline, Readable));
         }
 
         Err(sys_common::eof())
diff --git a/src/libstd/sys/unix/timer.rs b/src/libstd/sys/unix/timer.rs
index 79a6a871f8d..fe393b81e3d 100644
--- a/src/libstd/sys/unix/timer.rs
+++ b/src/libstd/sys/unix/timer.rs
@@ -46,7 +46,7 @@
 //!
 //! Note that all time units in this file are in *milliseconds*.
 
-pub use self::Req::*;
+use self::Req::*;
 
 use libc;
 use mem;
diff --git a/src/libstd/sys/windows/timer.rs b/src/libstd/sys/windows/timer.rs
index e2f9e2a9201..7e4dd768aa9 100644
--- a/src/libstd/sys/windows/timer.rs
+++ b/src/libstd/sys/windows/timer.rs
@@ -20,7 +20,7 @@
 //! Other than that, the implementation is pretty straightforward in terms of
 //! the other two implementations of timers with nothing *that* new showing up.
 
-pub use self::Req::*;
+use self::Req::*;
 
 use libc;
 use ptr;