[PATCH] Eliminate warnings from MIN/MAX macros

Only include the MIN/MAX macros unconditionally to eliminate warnings
for operating systems which already provide MIN/MAX macros.


Index: src/global.h
===================================================================
--- src/global.h	(revision 2056)
+++ src/global.h	(working copy)
@@ -251,8 +251,12 @@
 
 /* useful macros */
 
+#ifndef MIN
 #define MIN(X, Y) ((X)<(Y)?(X):(Y))
+#endif
+#ifndef MAX
 #define MAX(X, Y) ((X)>(Y)?(X):(Y))
+#endif
 /* #define ABS(X)    (((X)>0)?(X):-(X)) */
 #define SIGN(X)   (((X)>0)?1:-1)
 #define CLIP(X,AMIN,AMAX)   (((X)<(AMIN)) ? (AMIN) : ((X)>(AMAX)) ? (AMAX) : (X))

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