refactor: rename WINDOWS_ENABLED into WIN32_ENABLED

lib/detection.c

@@ -175,7 +175,7 @@ cahute_detect_serial(
     free(fullbuf);
 #endif
 
-#if WINDOWS_ENABLED
+#if WIN32_ENABLED
 # define SERIAL_COMM_HKEY "HARDWARE\\DEVICEMAP\\SERIALCOMM"
     cahute_serial_detection_entry entry;
     char value[1024];

lib/internals.h

@@ -35,14 +35,13 @@
 #include <stdlib.h>
 #include <string.h>
 
-#if defined(_WIN16) || defined(_WIN32) || defined(_WIN64) \
-    || defined(__WINDOWS__)
-# define WINDOWS_ENABLED 1
+#if defined(_WIN32) || defined(_WIN64) || defined(__WINDOWS__)
+# define WIN32_ENABLED 1
 #else
-# define WINDOWS_ENABLED 0
+# define WIN32_ENABLED 0
 #endif
 
-#if WINDOWS_ENABLED
+#if WIN32_ENABLED
 # define POSIX_ENABLED 0
 #elif defined(__unix__) && __unix__ \
     || (defined(__APPLE__) || defined(__MACH__))
@@ -111,7 +110,7 @@ cahute_log_memory(
         return CAHUTE_ERROR_IMPL /* Comment to prevent match by hook. */; \
     }
 
-#if WINDOWS_ENABLED
+#if WIN32_ENABLED
 /**
  * Log a Windows API error.
  *
@@ -166,7 +165,7 @@ CAHUTE_INLINE(void) log_windows_error(char const *func_name, DWORD code) {
 #if POSIX_ENABLED
 # define CAHUTE_LINK_MEDIUM_POSIX_SERIAL 1
 #endif
-#if WINDOWS_ENABLED
+#if WIN32_ENABLED
 # define CAHUTE_LINK_MEDIUM_WIN32_SERIAL 2
 # define CAHUTE_LINK_MEDIUM_WIN32_CESG   3
 #endif

lib/linkopen.c

@@ -389,7 +389,7 @@ CAHUTE_LOCAL(int) deinitialize_link_protocol(cahute_link *link) {
     return CAHUTE_OK;
 }
 
-#if WINDOWS_ENABLED
+#if WIN32_ENABLED
 # include <initguid.h>
 # include <cfgmgr32.h>
 # include <usbiodef.h>

lib/misc.c

@@ -28,7 +28,7 @@
 
 #include "internals.h"
 
-#if WINDOWS_ENABLED
+#if WIN32_ENABLED
 # include <windows.h>
 
 CAHUTE_EXTERN(int) cahute_sleep(unsigned long ms) {