iPhone support patch (thanks, Christian!)

Original email...

Date: Tue, 28 Oct 2008 20:22:04 +0100
From: Christian Gmeiner
To: icculus@icculus.org
Subject: Physfs IPhone suport

Hi.. this simple patch adds IPhone support to physfs. I
have also tested a normal osx 10 cocoa app and it builds too
with this patch. Hope to see it soon in the main hg tree.
In the next week I will do some tests on a real IPhone/IPod Touch,
but I think it should be okay.

greets,
--
Christian Gmeiner, B.Sc.

CHANGELOG.txt

@@ -2,6 +2,7 @@
  * CHANGELOG.
  */
 
+11022008 - iPhone support (thanks, Christian!)
 04032008 - Fixed PHYSFS_openAppend() to work as documented on Unix.
 03122008 - Fixed aliasing bug in Windows platform layer (thanks, Dennis!).
 03102008 - Changed some text files from ISO-8859-1 to UTF-8. Replaced all the

physfs_platforms.h

@@ -22,8 +22,16 @@
 #elif (defined OS2)
 #  define PHYSFS_PLATFORM_OS2
 #elif ((defined __MACH__) && (defined __APPLE__))
-#  define PHYSFS_PLATFORM_MACOSX
-#  define PHYSFS_PLATFORM_POSIX
+/* To check if iphone or not, we need to inlcude this file */
+# include <TargetConditionals.h> 
+# if (defined(TARGET_IPHONE_SIMULATOR) || (defined TARGET_OS_IPHONE))
+#    define PHYSFS_PLATFORM_UNIX
+#    define PHYSFS_PLATFORM_POSIX
+#    define PHYSFS_NO_CDROM_SUPPORT
+#  else
+#    define PHYSFS_PLATFORM_MACOSX
+#    define PHYSFS_PLATFORM_POSIX
+#  endif
 #elif defined(macintosh)
 #  error Classic Mac OS support was dropped from PhysicsFS 2.0. Move to OS X.
 #elif defined(unix)