Auto merge of #2146 - coolreader18:android-nlimits, r=JohnTitor

Add RLIM_NLIMITS + getloadavg on android

Author: bors

src/unix/linux_like/android/mod.rs

@@ -1267,6 +1267,7 @@ pub const RLIMIT_MSGQUEUE: ::c_int = 12;
 pub const RLIMIT_NICE: ::c_int = 13;
 pub const RLIMIT_RTPRIO: ::c_int = 14;
 
+pub const RLIM_NLIMITS: ::c_int = 16;
 pub const RLIM_INFINITY: ::rlim_t = !0;
 
 pub const TCGETS: ::c_int = 0x5401;
@@ -2456,6 +2457,7 @@ extern "C" {
         sevlen: ::size_t,
         flags: ::c_int,
     ) -> ::c_int;
+    pub fn getloadavg(loadavg: *mut ::c_double, nelem: ::c_int) -> ::c_int;
     pub fn preadv(fd: ::c_int, iov: *const ::iovec, count: ::c_int, offset: ::off_t) -> ::ssize_t;
     pub fn pwritev(fd: ::c_int, iov: *const ::iovec, count: ::c_int, offset: ::off_t) -> ::ssize_t;
     pub fn process_vm_readv(