Fix mips fallout on new toolchain

Author: Alexander Polakov

src/unix/notbsd/linux/mips.rs

@@ -63,7 +63,7 @@ s! {
     }
 
     pub struct sigaction {
-        pub sa_flags: ::c_uint,
+        pub sa_flags: ::c_int,
         pub sa_sigaction: ::sighandler_t,
         pub sa_mask: sigset_t,
         _restorer: *mut ::c_void,
@@ -190,7 +190,7 @@ pub const RLIMIT_AS: ::c_int = 6;
 pub const RLIMIT_RSS: ::c_int = 7;
 pub const RLIMIT_NPROC: ::c_int = 8;
 pub const RLIMIT_MEMLOCK: ::c_int = 9;
-pub const RLIMIT_NLIMITS: ::c_int = 15;
+pub const RLIMIT_NLIMITS: ::c_int = 16;
 pub const RLIM_INFINITY: ::rlim_t = 0x7fffffff;
 
 pub const O_APPEND: ::c_int = 8;
@@ -454,7 +454,7 @@ extern {
                        hostlen: ::socklen_t,
                        serv: *mut ::c_char,
                        sevlen: ::socklen_t,
-                       flags: ::c_uint) -> ::c_int;
-    pub fn eventfd(init: ::c_int, flags: ::c_int) -> ::c_int;
+                       flags: ::c_int) -> ::c_int;
+    pub fn eventfd(init: ::c_uint, flags: ::c_int) -> ::c_int;
     pub fn ptrace(request: ::c_uint, ...) -> ::c_long;
 }