Auto merge of #2433 - devnexen:fbsd_htr_self, r=JohnTitor

freebsd native api addition to deal with thread

Author: bors

libc-test/build.rs

@@ -1830,6 +1830,7 @@ fn test_freebsd(target: &str) {
                 "sys/stat.h",
                 "sys/statvfs.h",
                 "sys/sysctl.h",
+                "sys/thr.h",
                 "sys/time.h",
                 "sys/times.h",
                 "sys/timex.h",

libc-test/semver/freebsd.txt

@@ -1752,6 +1752,9 @@ sysctl
 sysctlbyname
 sysctlnametomib
 telldir
+thr_kill
+thr_kill2
+thr_self
 timer_create
 timer_delete
 timer_getoverrun

src/unix/bsd/freebsdlike/freebsd/mod.rs

@@ -1791,6 +1791,9 @@ extern "C" {
 
     pub fn uuidgen(store: *mut uuid, count: ::c_int) -> ::c_int;
 
+    pub fn thr_kill(id: ::c_long, sig: ::c_int) -> ::c_int;
+    pub fn thr_kill2(pid: ::pid_t, id: ::c_long, sig: ::c_int) -> ::c_int;
+    pub fn thr_self(tid: *mut ::c_long) -> ::c_int;
     pub fn pthread_getthreadid_np() -> ::c_int;
     pub fn pthread_getaffinity_np(
         td: ::pthread_t,