Merge branch 'ptrace-end' into 'master'

Final few ptrace changes

See merge request !41

src/data.rs

@@ -336,7 +336,7 @@ impl DerefMut for PtraceEvent {
 #[macro_export]
 macro_rules! ptrace_event {
     ($cause:expr $(, $a:expr $(, $b:expr $(, $c:expr)?)?)?) => {
-        PtraceEvent {
+        $crate::data::PtraceEvent {
             cause: $cause,
             $(a: $a,
               $(b: $b,

src/flag.rs

@@ -124,6 +124,7 @@ bitflags! {
         const PTRACE_STOP_SINGLESTEP = 0x0000_0000_0000_0004;
         const PTRACE_STOP_SIGNAL = 0x0000_0000_0000_0008;
         const PTRACE_STOP_BREAKPOINT = 0x0000_0000_0000_0010;
+        const PTRACE_STOP_EXIT = 0x0000_0000_0000_0020;
         const PTRACE_STOP_MASK = 0x0000_0000_0000_00FF;
 
         const PTRACE_EVENT_CLONE = 0x0000_0000_0000_0100;

src/lib.rs

 #![feature(asm)]
-#![feature(const_fn)]
-#![feature(maybe_uninit)] // remove when Redox updates their rust version
+#![feature(const_fn)] // see https://github.com/rust-lang/rfcs/pull/2632
 #![cfg_attr(not(test), no_std)]
 
 #[cfg(test)]