Header refactoring: unify and de-catchall rtree module.

test/unit/arena_reset.c

@@ -2,6 +2,8 @@
 #include "test/jemalloc_test.h"
 #endif
 
+#include "jemalloc/internal/rtree.h"
+
 #include "test/extent_hooks.h"
 
 static unsigned

test/unit/rtree.c

@@ -1,5 +1,7 @@
 #include "test/jemalloc_test.h"
 
+#include "jemalloc/internal/rtree.h"
+
 rtree_node_alloc_t *rtree_node_alloc_orig;
 rtree_node_dalloc_t *rtree_node_dalloc_orig;
 rtree_leaf_alloc_t *rtree_leaf_alloc_orig;

test/unit/spin.c

@@ -1,5 +1,7 @@
 #include "test/jemalloc_test.h"
 
+#include "jemalloc/internal/spin.h"
+
 TEST_BEGIN(test_spin) {
 	spin_t spinner = SPIN_INITIALIZER;