fix public interface

To make some kind of Ractor related extensions, some functions
should be exposed.

* include/ruby/thread_native.h
  * rb_native_mutex_*
  * rb_native_cond_*
* include/ruby/ractor.h
  * RB_OBJ_SHAREABLE_P(obj)
  * rb_ractor_shareable_p(obj)
  * rb_ractor_std*()
  * rb_cRactor

and rm ractor_pub.h
and rename srcdir/ractor.h to srcdir/ractor_core.h
    (to avoid conflict with include/ruby/ractor.h)

1 files changed, 1 insertions, 1 deletions

diff --git a/variable.c b/variable.c
index 3cead4bc92..9f9813319e 100644
--- a/variable.c
+++ b/variable.c
@@ -36,7 +36,7 @@
 #include "transient_heap.h"
 #include "variable.h"
 #include "vm_core.h"
-#include "ractor_pub.h"
+#include "ractor_core.h"
 #include "vm_sync.h"
 
 typedef void rb_gvar_compact_t(void *var);