Auto merge of #1512 - padenot:reset-on-fork, r=gnzlbg

Add SCHED_RESET_ON_FORK

This is a fix for #1511, and is valid for musl and glibc.

Author: bors

src/unix/linux_like/linux/mod.rs

@@ -1197,6 +1197,8 @@ pub const SCHED_RR: ::c_int = 2;
 pub const SCHED_BATCH: ::c_int = 3;
 pub const SCHED_IDLE: ::c_int = 5;
 
+pub const SCHED_RESET_ON_FORK: ::c_int = 0x40000000;
+
 // netinet/in.h
 // NOTE: These are in addition to the constants defined in src/unix/mod.rs