musl: update RLIM_NLIMITS

This reflects upstream commit 2507e7f. This should be safe to change as
this has been marked deprecated to warn people it will change across OS
versions since 0.2.64 (>5 years ago)

(backport <rust-lang#4443>)
(cherry picked from commit 5d24ad2)

Author: xbjfk

libc-test/build.rs

@@ -4339,6 +4339,10 @@ fn test_linux(target: &str) {
             if old_musl && (riscv64 || x86_64) && name == "O_LARGEFILE" {
                 return true;
             }
+            // Values changed in newer musl versions
+            if old_musl && name == "RLIM_NLIMITS" {
+                return true;
+            }
         }
         match name {
             // These constants are not available if gnu headers have been included

src/unix/linux_like/linux/arch/generic/mod.rs

@@ -357,9 +357,6 @@ cfg_if! {
         pub const RLIMIT_RTPRIO: c_int = 14;
         pub const RLIMIT_RTTIME: c_int = 15;
         #[deprecated(since = "0.2.64", note = "Not stable across OS versions")]
-        #[cfg(not(target_arch = "loongarch64"))]
-        pub const RLIM_NLIMITS: c_int = 15;
-        #[cfg(target_arch = "loongarch64")]
         pub const RLIM_NLIMITS: c_int = 16;
         #[allow(deprecated)]
         #[deprecated(since = "0.2.64", note = "Not stable across OS versions")]

src/unix/linux_like/linux/arch/mips/mod.rs

@@ -349,7 +349,7 @@ cfg_if! {
         pub const RLIMIT_RTPRIO: c_int = 14;
         pub const RLIMIT_RTTIME: c_int = 15;
         #[deprecated(since = "0.2.64", note = "Not stable across OS versions")]
-        pub const RLIM_NLIMITS: c_int = 15;
+        pub const RLIM_NLIMITS: c_int = 16;
         #[allow(deprecated)]
         #[deprecated(since = "0.2.64", note = "Not stable across OS versions")]
         pub const RLIMIT_NLIMITS: c_int = RLIM_NLIMITS;

src/unix/linux_like/linux/arch/powerpc/mod.rs

@@ -330,7 +330,7 @@ cfg_if! {
         pub const RLIMIT_RTPRIO: c_int = 14;
         pub const RLIMIT_RTTIME: c_int = 15;
         #[deprecated(since = "0.2.64", note = "Not stable across OS versions")]
-        pub const RLIM_NLIMITS: c_int = 15;
+        pub const RLIM_NLIMITS: c_int = 16;
         #[allow(deprecated)]
         #[deprecated(since = "0.2.64", note = "Not stable across OS versions")]
         pub const RLIMIT_NLIMITS: c_int = RLIM_NLIMITS;