Add single-include guards to new headers

As pointed out by Christian Persch in bug 620173, all the new
gdbus and gsettings headers were missing these.

gio/gcredentials.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_CREDENTIALS_H__
 #define __G_CREDENTIALS_H__
 

gio/gdbusaddress.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_DBUS_ADDRESS_H__
 #define __G_DBUS_ADDRESS_H__
 

gio/gdbusauthobserver.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_DBUS_AUTH_OBSERVER_H__
 #define __G_DBUS_AUTH_OBSERVER_H__
 

gio/gdbusconnection.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_DBUS_CONNECTION_H__
 #define __G_DBUS_CONNECTION_H__
 

gio/gdbuserror.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_DBUS_ERROR_H__
 #define __G_DBUS_ERROR_H__
 

gio/gdbusintrospection.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_DBUS_INTROSPECTION_H__
 #define __G_DBUS_INTROSPECTION_H__
 

gio/gdbusmessage.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_DBUS_MESSAGE_H__
 #define __G_DBUS_MESSAGE_H__
 

gio/gdbusmethodinvocation.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_DBUS_METHOD_INVOCATION_H__
 #define __G_DBUS_METHOD_INVOCATION_H__
 

gio/gdbusnameowning.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_DBUS_NAME_OWNING_H__
 #define __G_DBUS_NAME_OWNING_H__
 

gio/gdbusnamewatching.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_DBUS_NAME_WATCHING_H__
 #define __G_DBUS_NAME_WATCHING_H__
 

gio/gdbusproxy.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_DBUS_PROXY_H__
 #define __G_DBUS_PROXY_H__
 

gio/gdbusproxywatching.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_DBUS_PROXY_WATCHING_H__
 #define __G_DBUS_PROXY_WATCHING_H__
 

gio/gdbusserver.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_DBUS_SERVER_H__
 #define __G_DBUS_SERVER_H__
 

gio/gdbusutils.h

@@ -20,6 +20,10 @@
  * Author: David Zeuthen <davidz@redhat.com>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_DBUS_UTILS_H__
 #define __G_DBUS_UTILS_H__
 

gio/gsettings.h

@@ -19,6 +19,10 @@
  * Author: Ryan Lortie <desrt@desrt.ca>
  */
 
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
 #ifndef __G_SETTINGS_H__
 #define __G_SETTINGS_H__