librustc: Remove pub extern and priv extern from the language.

Place `pub` or `priv` on individual items instead.

src/libstd/unstable/at_exit.rs

@@ -41,8 +41,8 @@ pub fn at_exit(f: ~fn()) {
 mod rustrt {
     use libc::c_void;
 
-    pub extern {
-        fn rust_register_exit_function(runner: *c_void, f: ~~fn());
+    extern {
+        pub fn rust_register_exit_function(runner: *c_void, f: ~~fn());
     }
 }
 

src/libstd/unstable/intrinsics.rs

@@ -158,7 +158,7 @@ pub trait TyVisitor {
 }
 
 #[abi = "rust-intrinsic"]
-pub extern "rust-intrinsic" {
+extern "rust-intrinsic" {
 
     /// Atomic compare and exchange, sequentially consistent.
     pub fn atomic_cxchg(dst: &mut int, old: int, src: int) -> int;

src/libstd/unstable/lang.rs

@@ -26,22 +26,23 @@ pub mod rustrt {
     use unstable::lang::rust_task;
     use libc::{c_char, uintptr_t};
 
-    pub extern {
+    extern {
         #[rust_stack]
-        unsafe fn rust_upcall_malloc(td: *c_char, size: uintptr_t) -> *c_char;
+        pub unsafe fn rust_upcall_malloc(td: *c_char, size: uintptr_t)
+                                         -> *c_char;
 
         #[rust_stack]
-        unsafe fn rust_upcall_free(ptr: *c_char);
+        pub unsafe fn rust_upcall_free(ptr: *c_char);
 
         #[fast_ffi]
-        unsafe fn rust_upcall_malloc_noswitch(td: *c_char,
-                                              size: uintptr_t)
-                                           -> *c_char;
+        pub unsafe fn rust_upcall_malloc_noswitch(td: *c_char,
+                                                  size: uintptr_t)
+                                                  -> *c_char;
 
         #[rust_stack]
-        fn rust_try_get_task() -> *rust_task;
+        pub fn rust_try_get_task() -> *rust_task;
 
-        fn rust_dbg_breakpoint();
+        pub fn rust_dbg_breakpoint();
     }
 }