Add postgres.h to *.c files for pg_upgrade, ltree, and btree_gist, and

remove from local *.h files.

Per suggestion from Alvaro.

contrib/btree_gist/btree_bit.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_bit.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_var.h"
 #include "utils/bytea.h"

contrib/btree_gist/btree_bytea.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_bytea.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_var.h"
 #include "utils/bytea.h"

contrib/btree_gist/btree_cash.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_cash.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 #include "utils/cash.h"

contrib/btree_gist/btree_date.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_date.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 #include "utils/date.h"

contrib/btree_gist/btree_float4.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_float4.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 

contrib/btree_gist/btree_float8.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_float8.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 

contrib/btree_gist/btree_gist.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_gist.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 
 PG_MODULE_MAGIC;

contrib/btree_gist/btree_gist.h

@@ -4,7 +4,6 @@
 #ifndef __BTREE_GIST_H__
 #define __BTREE_GIST_H__
 
-#include "postgres.h"
 #include "access/gist.h"
 #include "access/itup.h"
 #include "access/nbtree.h"

contrib/btree_gist/btree_inet.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_inet.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 #include "utils/builtins.h"

contrib/btree_gist/btree_int2.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_int2.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 

contrib/btree_gist/btree_int4.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_int4.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 

contrib/btree_gist/btree_int8.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_int8.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 

contrib/btree_gist/btree_interval.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_interval.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 #include "utils/timestamp.h"

contrib/btree_gist/btree_macaddr.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_macaddr.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 #include "utils/builtins.h"

contrib/btree_gist/btree_numeric.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_numeric.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 
 #include <math.h>

contrib/btree_gist/btree_oid.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_oid.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 

contrib/btree_gist/btree_text.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_text.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_var.h"
 #include "utils/builtins.h"

contrib/btree_gist/btree_time.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_time.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 #include "utils/date.h"

contrib/btree_gist/btree_ts.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_ts.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 #include "utils/builtins.h"

contrib/btree_gist/btree_utils_num.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_utils_num.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 #include "btree_utils_num.h"
 #include "utils/cash.h"

contrib/btree_gist/btree_utils_var.c

@@ -1,6 +1,8 @@
 /*
  * contrib/btree_gist/btree_utils_var.c
  */
+#include "postgres.h"
+
 #include "btree_gist.h"
 
 #include <math.h>