HACK PATH_MAX msvc x64 fixes

Author: ndim

src/libavrdude.h

@@ -872,7 +872,11 @@ typedef struct {                // Memory cache for a subset of cached pages
 #define OFF                  0 // Many contexts: reset, power, LEDs, ...
 #define ON                   1 // Many contexts
 
+#ifdef PATH_MAX
 #define PGM_PORTLEN PATH_MAX
+#else
+#define PGM_PORTLEN _MAX_PATH
+#endif
 #define PGM_TYPELEN 32
 
 typedef enum {
@@ -1528,8 +1532,8 @@ void terminal_setup_update_progress(void);
 extern "C" {
 #endif
 
-void win_sys_config_set(char sys_config[PATH_MAX]);
-void win_usr_config_set(char usr_config[PATH_MAX]);
+void win_sys_config_set(char *sys_config);
+void win_usr_config_set(char *usr_config);
 
 #ifdef __cplusplus
 }