Reduce the header declarations (#1342)

- Since we have style rules to include foo.hpp at the top of its
  corresponding foo.cpp, this takes any headers included by foo.hpp
  as being also guaranteed for foo.cpp.

- Use C-style <foo.h> instead of <cfoo>, since the latter only
  guarantees putting symbols in the `std` namespace, which we are
  not using for C functions (e.g. `printf` not `std::printf`).

- Remove now-unused `__PRETTY_FUNCTION__` reporting

include/extern/utf8decoder.hpp

@@ -3,6 +3,8 @@
 #ifndef EXTERN_UTF8DECODER_H
 #define EXTERN_UTF8DECODER_H
 
+#include <stdint.h>
+
 uint32_t decode(uint32_t *state, uint32_t *codep, uint8_t byte);
 
 #endif // EXTERN_UTF8DECODER_H

include/gfx/rgba.hpp

@@ -3,7 +3,6 @@
 #ifndef RGBDS_GFX_RGBA_HPP
 #define RGBDS_GFX_RGBA_HPP
 
-#include <cstdint>
 #include <stdint.h>
 
 struct Rgba {

include/itertools.hpp

@@ -6,13 +6,6 @@
 #include <tuple>
 #include <utility>
 
-#include "platform.hpp" // __PRETTY_FUNCTION__
-
-template<typename... Ts>
-static inline void report() {
-	puts(__PRETTY_FUNCTION__);
-}
-
 template<typename T>
 class EnumSeqIterator {
 	T _value;

include/link/assign.hpp

@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: MIT */
 
-// Assigning all sections a place
 #ifndef RGBDS_LINK_ASSIGN_H
 #define RGBDS_LINK_ASSIGN_H
 

include/link/main.hpp

@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: MIT */
 
-// Declarations that all modules use, as well as `main` and related
 #ifndef RGBDS_LINK_MAIN_H
 #define RGBDS_LINK_MAIN_H
 

include/link/object.hpp

@@ -1,7 +1,5 @@
 /* SPDX-License-Identifier: MIT */
 
-// Declarations related to processing of object (.o) files
-
 #ifndef RGBDS_LINK_OBJECT_H
 #define RGBDS_LINK_OBJECT_H
 

include/link/output.hpp

@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: MIT */
 
-// Outputting the result of linking
 #ifndef RGBDS_LINK_OUTPUT_H
 #define RGBDS_LINK_OUTPUT_H
 

include/link/patch.hpp

@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: MIT */
 
-// Applying patches to SECTIONs
 #ifndef RGBDS_LINK_PATCH_H
 #define RGBDS_LINK_PATCH_H
 

include/link/sdas_obj.hpp

@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: MIT */
 
-// Assigning all sections a place
 #ifndef RGBDS_LINK_SDAS_OBJ_H
 #define RGBDS_LINK_SDAS_OBJ_H
 

include/link/section.hpp

@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: MIT */
 
-// Declarations manipulating symbols
 #ifndef RGBDS_LINK_SECTION_H
 #define RGBDS_LINK_SECTION_H
 

include/link/symbol.hpp

@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: MIT */
 
-// Declarations manipulating symbols
 #ifndef RGBDS_LINK_SYMBOL_H
 #define RGBDS_LINK_SYMBOL_H
 

include/platform.hpp

@@ -22,15 +22,6 @@
 	#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
 #endif
 
-// gcc has __PRETTY_FUNCTION__, MSVC has __FUNCSIG__, __func__ is standard
-#ifndef __PRETTY_FUNCTION__
-	#ifdef __FUNCSIG__
-		#define __PRETTY_FUNCTION__ __FUNCSIG__
-	#else
-		#define __PRETTY_FUNCTION__ __func__
-	#endif
-#endif
-
 // MSVC doesn't use POSIX types or defines for `read`
 #ifdef _MSC_VER
 	#include <io.h>