remove unnecessary headers and use stdbool

glib2d.c

@@ -11,9 +11,7 @@
 #include <pspdisplay.h>
 #include <pspgu.h>
 #include <vram.h>
-#include <stdio.h>
 #include <malloc.h>
-#include <string.h>
 #include <math.h>
 
 #ifdef USE_PNG
@@ -22,7 +20,6 @@
 
 #ifdef USE_JPEG
 #include <jpeglib.h>
-#include <jerror.h>
 #endif
 
 #define PSP_LINE_SIZE       (512)

glib2d.h

@@ -55,21 +55,7 @@
 extern "C" {
 #endif
 
-/**
- * \def false
- * \brief False boolean constant.
- */
-/**
- * \def true
- * \brief True boolean constant.
- */
-/**
- * \typedef bool
- * \brief Boolean variable type.
- */
-#define false (0)
-#define true (!false)
-typedef char bool;
+#include <stdbool.h>
 
 /**
  * \def USE_PNG