[base] Move run_set to namespace base

unit-tests/btree_damage_visitor_t.cc

@@ -3,10 +3,10 @@
 #include "test_utils.h"
 
 #include "base/endian_utils.h"
+#include "base/run.h"
 #include "persistent-data/data-structures/btree_damage_visitor.h"
 #include "persistent-data/space-maps/core.h"
 #include "persistent-data/transaction_manager.h"
-#include "persistent-data/run.h"
 
 using namespace base;
 using namespace std;

unit-tests/run_set_t.cc

@@ -1,6 +1,6 @@
 #include "gmock/gmock.h"
 
-#include "persistent-data/run_set.h"
+#include "base/run_set.h"
 
 #include <memory>
 

unit-tests/span_iterator_t.cc

@@ -1,7 +1,7 @@
 #include "gmock/gmock.h"
 
+#include "base/run_set.h"
 #include "persistent-data/space-maps/subtracting_span_iterator.h"
-#include "persistent-data/run_set.h"
 
 using namespace std;
 using namespace persistent_data;