gnu x86_64: Make type statvfs64 an alias for struct statvfs

Author: snogge

src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs

@@ -10,6 +10,7 @@ pub type __u64 = ::c_ulonglong;
 pub type __s64 = ::c_longlong;
 
 pub type statfs64 = statfs;
+pub type statvfs64 = statvfs;
 
 s! {
     pub struct sigaction {
@@ -116,21 +117,6 @@ s! {
         __reserved: [i64; 3],
     }
 
-    pub struct statvfs64 {
-        pub f_bsize: ::c_ulong,
-        pub f_frsize: ::c_ulong,
-        pub f_blocks: u64,
-        pub f_bfree: u64,
-        pub f_bavail: u64,
-        pub f_files: u64,
-        pub f_ffree: u64,
-        pub f_favail: u64,
-        pub f_fsid: ::c_ulong,
-        pub f_flag: ::c_ulong,
-        pub f_namemax: ::c_ulong,
-        __f_spare: [::c_int; 6],
-    }
-
     pub struct pthread_attr_t {
         #[cfg(target_pointer_width = "32")]
         __size: [u32; 8],