Bug#596056: Acknowledgement (grfcodec: unusable on big-endian architectures where GCC does not define __BIG_ENDIAN__)

[Rubidium]

Seems like grfcodec used __BIG_ENDIAN__ in other places as well. The 
attached patch removes all traces of __BIG_ENDIAN__ in the same way as 
the first patch. However, it still needs to be tested on s390 to be sure 
this fixes all problems.
diff -r e5a433743592 src/grfcodec.cpp
--- a/src/grfcodec.cpp	Sat Aug 14 21:47:14 2010 +0200
+++ b/src/grfcodec.cpp	Wed Sep 08 15:50:52 2010 +0200
@@ -784,7 +784,7 @@
 					palette = readpal(optarg);
 				break;
 		case 'c':
-			#ifdef __BIG_ENDIAN__
+			#if __BYTE_ORDER == __BIG_ENDIAN
 				printf("Cropping not supported on big endian architectures.\n");
 				exit(1);
 			#endif
diff -r e5a433743592 src/pcxfile.cpp
--- a/src/pcxfile.cpp	Sat Aug 14 21:47:14 2010 +0200
+++ b/src/pcxfile.cpp	Wed Sep 08 15:50:52 2010 +0200
@@ -478,7 +478,7 @@
 	putcolourmap = map;
 }
 
-#ifdef __BIG_ENDIAN__
+#if __BYTE_ORDER == __BIG_ENDIAN
 void pcxfile::be_swapheader(pcxheader& header)
 {
 	header.window[0] = BE_SWAP16(header.window[0]);
diff -r e5a433743592 src/pcxsprit.cpp
--- a/src/pcxsprit.cpp	Sat Aug 14 21:47:14 2010 +0200
+++ b/src/pcxsprit.cpp	Wed Sep 08 15:50:52 2010 +0200
@@ -208,7 +208,7 @@
 	header.window[3] = totaly - 1;
 	header.screen[1] = totaly - 1;
 
-	#ifdef __BIG_ENDIAN__
+	#if __BYTE_ORDER == __BIG_ENDIAN
 		pcxheader le_header = header;
 		be_swapheader(le_header);
 	#else
diff -r e5a433743592 src/typesize.h
--- a/src/typesize.h	Sat Aug 14 21:47:14 2010 +0200
+++ b/src/typesize.h	Wed Sep 08 15:50:52 2010 +0200
@@ -148,7 +148,8 @@
 	S8  s8[4];
 };
 
-#ifdef __BIG_ENDIAN__
+#include <endian.h>
+#if __BYTE_ORDER == __BIG_ENDIAN
 #	define BE_SWAP16(b) (*((U8*)(&b))+(*(((U8*)(&b))+1)<<8))
 #	define BE_SWAP32(b) (*((U8*)(&b))+(*(((U8*)(&b))+1)<<8)+(*(((U8*)(&b))+2)<<16)+(*(((U8*)(&b))+3)<<24))
 #	define BYTE_OFSL 1