define STRING and XSTRING in q_shared.h (#4054)

code/qcommon/common.c

@@ -40,8 +40,6 @@ int demo_protocols[] =
 #define MIN_COMHUNKMEGS		56
 #define DEF_COMHUNKMEGS		64
 #define DEF_COMZONEMEGS		24
-#define XSTRING(x)				STRING(x)
-#define STRING(x)					#x
 #define DEF_COMHUNKMEGS_S	XSTRING(DEF_COMHUNKMEGS)
 #define DEF_COMZONEMEGS_S	XSTRING(DEF_COMZONEMEGS)
 

code/qcommon/q_shared.h

@@ -174,6 +174,10 @@ typedef int		clipHandle_t;
 #define NULL ((void *)0)
 #endif
 
+#define STRING(s)			#s
+// expand constants before stringifying them
+#define XSTRING(s)			STRING(s)
+
 #define	MAX_QINT			0x7fffffff
 #define	MIN_QINT			(-MAX_QINT-1)