Add stub for kill and sigq.

src/exec.rs

@@ -34,7 +34,7 @@ pub fn main() -> ! {
         FdGuard::new(syscall::dup(*auth, b"cur-context").expect("failed to open open_via_dup"));
     let this_thr_fd = unsafe { redox_rt::initialize_freestanding(this_thr_fd) };
 
-    log::set_max_level(log::LevelFilter::Trace);
+    log::set_max_level(log::LevelFilter::Debug);
     let _ = log::set_logger(&Logger);
 
     let envs = {

src/procmgr.rs

@@ -716,6 +716,14 @@ impl<'a> ProcScheme<'a> {
                         self.on_setresugid(fd_pid, payload).map(|()| 0),
                         op,
                     )),
+                    ProcCall::Kill => {
+                        log::error!("KILL STUB");
+                        Ready(Response::ok(0, op))
+                    }
+                    ProcCall::Sigq => {
+                        log::error!("SIGQ STUB");
+                        Ready(Response::ok(0, op))
+                    }
                 }
             }
         }