Use 32-bit mode_t on 64-bit Android devices

Author: mmatyas

src/unix/notbsd/android/b32.rs

@@ -1,3 +1,5 @@
+pub type mode_t = u16;
+
 s! {
     pub struct sigaction {
         pub sa_sigaction: ::sighandler_t,

src/unix/notbsd/android/b64.rs

@@ -1,3 +1,5 @@
+pub type mode_t = u32;
+
 s! {
     pub struct sigaction {
         pub sa_flags: ::c_uint,

src/unix/notbsd/android/mod.rs

@@ -13,7 +13,6 @@ pub type ino_t = u32;
 pub type blkcnt_t = u32;
 pub type blksize_t = u32;
 pub type dev_t = u32;
-pub type mode_t = u16;
 pub type nlink_t = u32;
 pub type useconds_t = u32;
 pub type socklen_t = i32;