Move Trigger and TriggerDesc structs out of rel.h into a new reltrigger.h

This lets us stop including rel.h into execnodes.h, which is a widely
used header.

src/backend/executor/execAmi.c

@@ -48,6 +48,7 @@
 #include "executor/nodeWindowAgg.h"
 #include "executor/nodeWorktablescan.h"
 #include "nodes/nodeFuncs.h"
+#include "utils/rel.h"
 #include "utils/syscache.h"
 
 

src/backend/executor/execCurrent.c

@@ -18,6 +18,7 @@
 #include "utils/builtins.h"
 #include "utils/lsyscache.h"
 #include "utils/portal.h"
+#include "utils/rel.h"
 
 
 static char *fetch_cursor_param_value(ExprContext *econtext, int paramId);

src/backend/executor/nodeBitmapHeapscan.c

@@ -44,6 +44,7 @@
 #include "storage/bufmgr.h"
 #include "storage/predicate.h"
 #include "utils/memutils.h"
+#include "utils/rel.h"
 #include "utils/snapmgr.h"
 #include "utils/tqual.h"
 

src/backend/executor/nodeForeignscan.c

@@ -25,6 +25,7 @@
 #include "executor/executor.h"
 #include "executor/nodeForeignscan.h"
 #include "foreign/fdwapi.h"
+#include "utils/rel.h"
 
 static TupleTableSlot *ForeignNext(ForeignScanState *node);
 static bool ForeignRecheck(ForeignScanState *node, TupleTableSlot *slot);

src/backend/executor/nodeIndexscan.c

@@ -33,6 +33,7 @@
 #include "utils/array.h"
 #include "utils/lsyscache.h"
 #include "utils/memutils.h"
+#include "utils/rel.h"
 
 
 static TupleTableSlot *IndexNext(IndexScanState *node);

src/backend/executor/nodeLockRows.c

@@ -25,6 +25,7 @@
 #include "executor/executor.h"
 #include "executor/nodeLockRows.h"
 #include "storage/bufmgr.h"
+#include "utils/rel.h"
 #include "utils/tqual.h"
 
 

src/backend/executor/nodeMergeAppend.c

@@ -42,6 +42,7 @@
 #include "executor/execdebug.h"
 #include "executor/nodeMergeAppend.h"
 #include "utils/lsyscache.h"
+#include "utils/rel.h"
 
 /*
  * It gets quite confusing having a heap array (indexed by integers) which

src/backend/executor/nodeModifyTable.c

@@ -46,6 +46,7 @@
 #include "storage/bufmgr.h"
 #include "utils/builtins.h"
 #include "utils/memutils.h"
+#include "utils/rel.h"
 #include "utils/tqual.h"
 
 

src/backend/executor/nodeSeqscan.c

@@ -28,6 +28,7 @@
 #include "access/relscan.h"
 #include "executor/execdebug.h"
 #include "executor/nodeSeqscan.h"
+#include "utils/rel.h"
 
 static void InitScanRelation(SeqScanState *node, EState *estate);
 static TupleTableSlot *SeqNext(SeqScanState *node);

src/backend/executor/nodeTidscan.c

@@ -32,6 +32,7 @@
 #include "optimizer/clauses.h"
 #include "storage/bufmgr.h"
 #include "utils/array.h"
+#include "utils/rel.h"
 
 
 #define IsCTIDVar(node)  \

src/backend/executor/spi.c

@@ -28,6 +28,7 @@
 #include "utils/datum.h"
 #include "utils/lsyscache.h"
 #include "utils/memutils.h"
+#include "utils/rel.h"
 #include "utils/snapmgr.h"
 #include "utils/syscache.h"
 #include "utils/typcache.h"