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). 

1 files changed, 11 insertions, 3 deletions

diff --git a/pack.c b/pack.c
index ae5a9a18e2..8ba492fd3b 100644
--- a/pack.c
+++ b/pack.c
@@ -9,12 +9,20 @@

 **********************************************************************/

-#include "ruby/encoding.h"
-#include "internal.h"
-#include <sys/types.h>
+#include "ruby/config.h"
+
 #include <ctype.h>
 #include <errno.h>
 #include <float.h>
+#include <sys/types.h>
+
+#include "internal.h"
+#include "internal/bits.h"
+#include "internal/string.h"
+#include "internal/symbol.h"
+#include "internal/util.h"
+#include "internal/variable.h"
+
 #include "builtin.h"

 /*