Fix up recent breakage of headerscheck and cpluspluscheck.

headerscheck and cpluspluscheck should skip the recently-added
cmdtaglist.h header, since (like kwlist.h and some other similarly-
designed headers) it's not meant to be included standalone.

evtcache.h was missing an #include to support its usage of Bitmapset.

typecmds.h was missing an #include to support its usage of ParseState.

The first two of these were evidently oversights in commit 2f966131.
I didn't track down exactly which change broke typecmds.h, but it
must have been some rearrangement in one of its existing inclusions,
because it's referenced ParseState for quite a long time and there
were not complaints from these checking programs before.

src/include/commands/typecmds.h

@@ -16,7 +16,7 @@
 
 #include "access/htup.h"
 #include "catalog/dependency.h"
-#include "nodes/parsenodes.h"
+#include "parser/parse_node.h"
 
 
 #define DEFAULT_TYPDELIM		','

src/include/tcop/cmdtaglist.h

@@ -11,7 +11,7 @@
  * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * src/backend/tcop/cmdtaglist.h
+ * src/include/tcop/cmdtaglist.h
  *
  *----------------------------------------------------------------------
  */

src/include/utils/evtcache.h

@@ -14,6 +14,7 @@
 #ifndef EVTCACHE_H
 #define EVTCACHE_H
 
+#include "nodes/bitmapset.h"
 #include "nodes/pg_list.h"
 
 typedef enum

src/tools/pginclude/cpluspluscheck

@@ -107,6 +107,7 @@ do
 	test "$f" = src/interfaces/ecpg/preproc/c_kwlist.h && continue
 	test "$f" = src/interfaces/ecpg/preproc/ecpg_kwlist.h && continue
 	test "$f" = src/include/regex/regerrs.h && continue
+	test "$f" = src/include/tcop/cmdtaglist.h && continue
 	test "$f" = src/pl/plpgsql/src/plerrcodes.h && continue
 	test "$f" = src/pl/plpython/spiexceptions.h && continue
 	test "$f" = src/pl/tcl/pltclerrcodes.h && continue

src/tools/pginclude/headerscheck

@@ -103,6 +103,7 @@ do
 	test "$f" = src/interfaces/ecpg/preproc/c_kwlist.h && continue
 	test "$f" = src/interfaces/ecpg/preproc/ecpg_kwlist.h && continue
 	test "$f" = src/include/regex/regerrs.h && continue
+	test "$f" = src/include/tcop/cmdtaglist.h && continue
 	test "$f" = src/pl/plpgsql/src/plerrcodes.h && continue
 	test "$f" = src/pl/plpython/spiexceptions.h && continue
 	test "$f" = src/pl/tcl/pltclerrcodes.h && continue