Add CLONE_CLEAR_SIGHAND and CLONE_INTO_CGROUP for Android

(backport <rust-lang#4502>)
(cherry picked from commit cbcd344)

Author: chriswailes

libc-test/semver/android.txt

@@ -238,9 +238,11 @@ CLOCK_TAI
 CLOCK_THREAD_CPUTIME_ID
 CLONE_CHILD_CLEARTID
 CLONE_CHILD_SETTID
+CLONE_CLEAR_SIGHAND
 CLONE_DETACHED
 CLONE_FILES
 CLONE_FS
+CLONE_INTO_CGROUP
 CLONE_IO
 CLONE_NEWCGROUP
 CLONE_NEWIPC

src/unix/linux_like/android/mod.rs

@@ -2896,6 +2896,8 @@ pub const SCHED_DEADLINE: c_int = 6;
 pub const SCHED_RESET_ON_FORK: c_int = 0x40000000;
 
 pub const CLONE_PIDFD: c_int = 0x1000;
+pub const CLONE_CLEAR_SIGHAND: c_ulonglong = 0x100000000;
+pub const CLONE_INTO_CGROUP: c_ulonglong = 0x200000000;
 
 // linux/membarrier.h
 pub const MEMBARRIER_CMD_QUERY: c_int = 0;