Auto merge of #2675 - qwandor:seal, r=Amanieu

Android: Add F_SEAL_FUTURE_WRITE constant.

Author: bors

src/unix/linux_like/android/mod.rs

@@ -992,6 +992,8 @@ pub const F_TEST: ::c_int = 3;
 pub const F_TLOCK: ::c_int = 2;
 pub const F_ULOCK: ::c_int = 0;
 
+pub const F_SEAL_FUTURE_WRITE: ::c_int = 0x0010;
+
 pub const IFF_LOWER_UP: ::c_int = 0x10000;
 pub const IFF_DORMANT: ::c_int = 0x20000;
 pub const IFF_ECHO: ::c_int = 0x40000;