haiku: time_t is now 64-bit on x86_64.

Author: jessicah

src/unix/haiku/b32.rs

@@ -1,2 +1,3 @@
 pub type c_long = i32;
 pub type c_ulong = u32;
+pub type time_t = i32;

src/unix/haiku/b64.rs

@@ -1,2 +1,3 @@
 pub type c_ulong = u64;
 pub type c_long = i64;
+pub type time_t = i64;

src/unix/haiku/mod.rs

@@ -9,7 +9,6 @@ pub type speed_t = ::c_uint;
 pub type c_char = i8;
 pub type clock_t = i32;
 pub type clockid_t = i32;
-pub type time_t = i32;
 pub type suseconds_t = i32;
 pub type wchar_t = i32;
 pub type off_t = i64;