Fix implicit declarations

pluma/smclient/eggsmclient-xsmp.c

@@ -36,6 +36,7 @@
 #include <X11/SM/SMlib.h>
 
 #include <gdk/gdk.h>
+#include <gdk/gdkx.h>
 
 #define EGG_TYPE_SM_CLIENT_XSMP            (egg_sm_client_xsmp_get_type ())
 #define EGG_SM_CLIENT_XSMP(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), EGG_TYPE_SM_CLIENT_XSMP, EggSMClientXSMP))

tests/document-loader.c

@@ -21,6 +21,7 @@
  */
 
 #include "pluma-gio-document-loader.h"
+#include "pluma-prefs-manager-app.h"
 #include <gio/gio.h>
 #include <gtk/gtk.h>
 #include <glib.h>

tests/document-output-stream.c

@@ -22,6 +22,7 @@
 
 
 #include "pluma-document-output-stream.h"
+#include "pluma-prefs-manager-app.h"
 #include <gio/gio.h>
 #include <gtk/gtk.h>
 #include <glib.h>

tests/document-saver.c

@@ -21,9 +21,11 @@
  */
 
 #include "pluma-gio-document-loader.h"
+#include "pluma-prefs-manager-app.h"
 #include <gio/gio.h>
 #include <gtk/gtk.h>
 #include <glib.h>
+#include <glib/gprintf.h>
 #include <string.h>
 #include <sys/stat.h>
 

tests/smart-converter.c

@@ -25,6 +25,7 @@
 #include "pluma-encodings.h"
 #include <gio/gio.h>
 #include <glib.h>
+#include <glib/gprintf.h>
 #include <string.h>
 
 #define TEXT_TO_CONVERT "this is some text to make the tests"