Update to 20160106 OS X Preview for Developers release.

byuu says:

New update. Most of the work today went into eliminating hiro::Image
from all objects in all ports, replacing with nall::image. That took an
eternity.

Changelog:
- fixed crashing bug when loading games [thanks endrift!!]
- toggling "show status bar" option adjusts window geometry (not
  supposed to recenter the window, though)
- button sizes improved; icon-only button icons no longer being cut off

nall/decode/base64.hpp

@@ -1,5 +1,4 @@
-#ifndef NALL_DECODE_BASE64_HPP
-#define NALL_DECODE_BASE64_HPP
+#pragma once
 
 namespace nall { namespace Decode {
 
@@ -45,5 +44,3 @@ inline auto Base64(const string& text) -> vector<uint8_t> {
 }
 
 }}
-
-#endif

nall/decode/bmp.hpp

@@ -1,5 +1,4 @@
-#ifndef NALL_DECODE_BMP_HPP
-#define NALL_DECODE_BMP_HPP
+#pragma once
 
 namespace nall { namespace Decode {
 
@@ -75,5 +74,3 @@ private:
 };
 
 }}
-
-#endif

nall/decode/gzip.hpp

@@ -1,5 +1,4 @@
-#ifndef NALL_DECODE_GZIP_HPP
-#define NALL_DECODE_GZIP_HPP
+#pragma once
 
 #include <nall/file.hpp>
 #include <nall/decode/inflate.hpp>
@@ -77,5 +76,3 @@ auto GZIP::decompress(const uint8* data, uint size) -> bool {
 }
 
 }}
-
-#endif

nall/decode/inflate.hpp

@@ -1,5 +1,4 @@
-#ifndef NALL_DECODE_INFLATE_HPP
-#define NALL_DECODE_INFLATE_HPP
+#pragma once
 
 #include <setjmp.h>
 
@@ -345,5 +344,3 @@ inline auto puff(
 }
 
 }}
-
-#endif

nall/decode/png.hpp

@@ -1,5 +1,4 @@
-#ifndef NALL_DECODE_PNG_HPP
-#define NALL_DECODE_PNG_HPP
+#pragma once
 
 #include <nall/string.hpp>
 #include <nall/decode/inflate.hpp>
@@ -331,5 +330,3 @@ auto PNG::readbits(const uint8*& data) -> uint {
 }
 
 }}
-
-#endif

nall/decode/url.hpp

@@ -1,5 +1,4 @@
-#ifndef NALL_DECODE_URL_HPP
-#define NALL_DECODE_URL_HPP
+#pragma once
 
 namespace nall { namespace Decode {
 
@@ -32,5 +31,3 @@ inline auto URL(const string& input) -> string {
 }
 
 }}
-
-#endif

nall/decode/zip.hpp

@@ -1,5 +1,4 @@
-#ifndef NALL_DECODE_ZIP_HPP
-#define NALL_DECODE_ZIP_HPP
+#pragma once
 
 #include <nall/filemap.hpp>
 #include <nall/string.hpp>
@@ -122,5 +121,3 @@ public:
 };
 
 }}
-
-#endif