decouple internal.h headers

Saves comitters' daily life by avoid #include-ing everything from
internal.h to make each file do so instead.  This would significantly
speed up incremental builds.

We take the following inclusion order in this changeset:

1.  "ruby/config.h", where _GNU_SOURCE is defined (must be the very
    first thing among everything).
2.  RUBY_EXTCONF_H if any.
3.  Standard C headers, sorted alphabetically.
4.  Other system headers, maybe guarded by #ifdef
5.  Everything else, sorted alphabetically.

Exceptions are those win32-related headers, which tend not be self-
containing (headers have inclusion order dependencies).

7 files changed, 14 insertions, 0 deletions

diff --git a/coroutine/amd64/Context.h b/coroutine/amd64/Context.h
index 8fe323c1a1..441c4491c1 100644
--- a/coroutine/amd64/Context.h
+++ b/coroutine/amd64/Context.h
@@ -8,6 +8,8 @@
 #pragma once
 
 #include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <string.h>
 
 #define COROUTINE __attribute__((noreturn)) void
diff --git a/coroutine/arm32/Context.h b/coroutine/arm32/Context.h
index e29fe1bb63..8bba8f6376 100644
--- a/coroutine/arm32/Context.h
+++ b/coroutine/arm32/Context.h
@@ -8,6 +8,8 @@
 #pragma once
 
 #include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <string.h>
 
 #define COROUTINE __attribute__((noreturn)) void
diff --git a/coroutine/arm64/Context.h b/coroutine/arm64/Context.h
index a1ae921144..63170ce4cc 100644
--- a/coroutine/arm64/Context.h
+++ b/coroutine/arm64/Context.h
@@ -8,6 +8,8 @@
 #pragma once
 
 #include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <string.h>
 
 #define COROUTINE __attribute__((noreturn)) void
diff --git a/coroutine/ppc64le/Context.h b/coroutine/ppc64le/Context.h
index adf21b4fd9..e36f9c3583 100644
--- a/coroutine/ppc64le/Context.h
+++ b/coroutine/ppc64le/Context.h
@@ -1,6 +1,8 @@
 #pragma once
 
 #include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <string.h>
 
 #define COROUTINE __attribute__((noreturn)) void
diff --git a/coroutine/win32/Context.h b/coroutine/win32/Context.h
index 299515ed92..68a71a76fb 100644
--- a/coroutine/win32/Context.h
+++ b/coroutine/win32/Context.h
@@ -8,6 +8,8 @@
 #pragma once
 
 #include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <string.h>
 
 #define COROUTINE __declspec(noreturn) void __fastcall
diff --git a/coroutine/win64/Context.h b/coroutine/win64/Context.h
index 6bf2dc5b35..659e503d21 100644
--- a/coroutine/win64/Context.h
+++ b/coroutine/win64/Context.h
@@ -8,6 +8,8 @@
 #pragma once
 
 #include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <string.h>
 
 #define COROUTINE __declspec(noreturn) void
diff --git a/coroutine/x86/Context.h b/coroutine/x86/Context.h
index 6d3a56eaa6..123321ded6 100644
--- a/coroutine/x86/Context.h
+++ b/coroutine/x86/Context.h
@@ -8,6 +8,8 @@
 #pragma once
 
 #include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <string.h>
 
 #define COROUTINE __attribute__((noreturn, fastcall)) void