Make core/ includes absolute, remove subfolders from include path

This allows more consistency in the manner we include core headers,
where previously there would be a mix of absolute, relative and
include path-dependent includes.

thirdparty/misc/aes256.h

@@ -21,7 +21,7 @@
 #ifndef AES_256_H
 #define AES_256_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 #ifdef __cplusplus
 extern "C" {

thirdparty/misc/hq2x.cpp

@@ -16,8 +16,8 @@
 
 
 #include "hq2x.h"
-#include "math_funcs.h"
 
+#include "core/math/math_funcs.h"
 
 static const uint32_t AMASK = 0xFF000000;
 static const uint32_t YMASK = 0x00FF0000;

thirdparty/misc/hq2x.h

@@ -1,7 +1,7 @@
 #ifndef HQ2X_H
 #define HQ2X_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 
 uint32_t *hq2x_resize(

thirdparty/misc/md5.h

@@ -42,7 +42,7 @@
 
 /* NOT typedef a 32 bit type */
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 /* Data structure for MD5 (Message Digest) computation */
 typedef struct {

thirdparty/misc/pcg.h

@@ -4,7 +4,7 @@
 #ifndef RANDOM_H
 #define RANDOM_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 #define PCG_DEFAULT_INC_64 1442695040888963407ULL
 

thirdparty/misc/triangulator.h

@@ -21,11 +21,11 @@
 #ifndef TRIANGULATOR_H
 #define TRIANGULATOR_H
 
-#include "list.h"
-#include "set.h"
-#include "vector2.h"
-//2D point structure
+#include "core/list.h"
+#include "core/math/vector2.h"
+#include "core/set.h"
 
+//2D point structure
 
 #define TRIANGULATOR_CCW 1
 #define TRIANGULATOR_CW -1

thirdparty/misc/yuv2rgb.h

@@ -27,7 +27,7 @@ ship it.
 #ifndef YUV2RGB_H
 #define YUV2RGB_H
 
-#include "typedefs.h"
+#include "core/typedefs.h"
 
 static const uint32_t tables[256*3] = {
 	/* y_table */