Reorganized core/ directory, it was too fatty already

-Removed FuncRef, since Callable makes it obsolete
-Removed int_types.h as its obsolete in c++11+
-Changed color names code

core/crypto/aes_context.h

@@ -32,7 +32,7 @@
 #define AES_CONTEXT_H
 
 #include "core/crypto/crypto_core.h"
-#include "core/reference.h"
+#include "core/object/reference.h"
 
 class AESContext : public Reference {
 	GDCLASS(AESContext, Reference);

core/crypto/crypto.cpp

@@ -30,7 +30,7 @@
 
 #include "crypto.h"
 
-#include "core/engine.h"
+#include "core/config/engine.h"
 #include "core/io/certs_compressed.gen.h"
 #include "core/io/compression.h"
 

core/crypto/crypto.h

@@ -32,10 +32,10 @@
 #define CRYPTO_H
 
 #include "core/crypto/hashing_context.h"
+#include "core/io/resource.h"
 #include "core/io/resource_loader.h"
 #include "core/io/resource_saver.h"
-#include "core/reference.h"
-#include "core/resource.h"
+#include "core/object/reference.h"
 
 class CryptoKey : public Resource {
 	GDCLASS(CryptoKey, Resource);

core/crypto/crypto_core.h

@@ -31,7 +31,7 @@
 #ifndef CRYPTO_CORE_H
 #define CRYPTO_CORE_H
 
-#include "core/reference.h"
+#include "core/object/reference.h"
 
 class CryptoCore {
 public:

core/crypto/hashing_context.h

@@ -31,7 +31,7 @@
 #ifndef HASHING_CONTEXT_H
 #define HASHING_CONTEXT_H
 
-#include "core/reference.h"
+#include "core/object/reference.h"
 
 class HashingContext : public Reference {
 	GDCLASS(HashingContext, Reference);