Auto merge of #2221 - devnexen:fbsd_pthread_threadid_np, r=JohnTitor

freebsd adding pthread_getthreadid_np

Author: bors

libc-test/semver/freebsd.txt

@@ -1546,6 +1546,7 @@ pthread_condattr_getclock
 pthread_condattr_getpshared
 pthread_condattr_setclock
 pthread_condattr_setpshared
+pthread_getthreadid_np
 pthread_kill
 pthread_main_np
 pthread_mutex_timedlock

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

@@ -1561,6 +1561,8 @@ extern "C" {
         newfd: ::c_int,
     ) -> ::c_int;
 
+    pub fn pthread_getthreadid_np() -> ::c_int;
+
     #[cfg_attr(all(target_os = "freebsd", freebsd11), link_name = "statfs@FBSD_1.0")]
     pub fn statfs(path: *const ::c_char, buf: *mut statfs) -> ::c_int;
     #[cfg_attr(all(target_os = "freebsd", freebsd11), link_name = "fstatfs@FBSD_1.0")]