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, 20 insertions, 15 deletions

diff --git a/vm_dump.c b/vm_dump.c
index c778e1b4dd..09051cfc32 100644
--- a/vm_dump.c
+++ b/vm_dump.c
@@ -8,27 +8,32 @@
 
 **********************************************************************/
 
-
-#include "internal.h"
-#include "addr2line.h"
-#include "vm_core.h"
-#include "iseq.h"
-#include "gc.h"
+#include "ruby/config.h"
 
 #ifdef HAVE_UCONTEXT_H
-#include <ucontext.h>
+# include <ucontext.h>
 #endif
+
 #ifdef __APPLE__
-#ifdef HAVE_LIBPROC_H
-#include <libproc.h>
-#endif
-#include <mach/vm_map.h>
-#include <mach/mach_init.h>
-#ifdef __LP64__
-#define vm_region_recurse vm_region_recurse_64
-#endif
+# ifdef HAVE_LIBPROC_H
+#  include <libproc.h>
+# endif
+# include <mach/vm_map.h>
+# include <mach/mach_init.h>
+# ifdef __LP64__
+#  define vm_region_recurse vm_region_recurse_64
+# endif
 #endif
 
+#include "addr2line.h"
+#include "gc.h"
+#include "internal.h"
+#include "internal/variable.h"
+#include "internal/vm.h"
+#include "iseq.h"
+#include "vm_core.h"
+
+
 /* see vm_insnhelper.h for the values */
 #ifndef VMDEBUG
 #define VMDEBUG 0