Auto merge of rust-lang#276 - lemonrock:SC_HOSTNAME_MAX_OpenBsd, r=alexcrichton

Definition of _SC_HOST_NAME_MAX for OpenBSD and FreeBSD

Author: bors

src/unix/bsd/openbsdlike/netbsd.rs

@@ -310,6 +310,7 @@ pub const _SC_SEMAPHORES : ::c_int = 42;
 pub const _SC_SHARED_MEMORY_OBJECTS : ::c_int = 87;
 pub const _SC_SYNCHRONIZED_IO : ::c_int = 31;
 pub const _SC_TIMERS : ::c_int = 44;
+pub const _SC_HOST_NAME_MAX : ::c_int = 69;
 
 pub const FD_SETSIZE: usize = 0x100;
 

src/unix/bsd/openbsdlike/openbsd.rs

@@ -231,6 +231,7 @@ pub const _SC_REALTIME_SIGNALS : ::c_int = 64;
 pub const _SC_RTSIG_MAX : ::c_int = 66;
 pub const _SC_SIGQUEUE_MAX : ::c_int = 70;
 pub const _SC_TIMER_MAX : ::c_int = 93;
+pub const _SC_HOST_NAME_MAX : ::c_int = 33;
 
 pub const FD_SETSIZE: usize = 1024;