Move some platform compile fixes into platform.h file

ports/win32/bacport.h

@@ -76,11 +76,6 @@ and globals in favor of more secure versions.  */
 #define inline __inline
 #endif
 
-#ifdef _WIN32
-#define strncasecmp(x, y, z) _strnicmp(x, y, z)
-#define snprintf _snprintf
-#endif
-
 BACNET_STACK_EXPORT
 extern int bip_get_local_netmask(
     struct in_addr *netmask);

src/bacnet/basic/sys/platform.h

@@ -40,8 +40,10 @@
 #   define BACNET_STACK_DEPRECATED(message)
 # endif
 
-# if defined(WIN32) || defined(WIN64)
-#  define strcasecmp _stricmp
+#if defined(WIN32) || defined(WIN64)
+#define strcasecmp _stricmp
+#define strncasecmp _strnicmp
+#define snprintf _snprintf
 #elif defined(__ZEPHYR__)
 #  include <strings.h>
 # endif