Don't include <libxml/parser.h> from public headers if GST_DISABLE_DEPRECATED is defined

Since everything GstXML related has been deprecated, we can now skip the
libxml includes from the public headers when GST_DISABLE_DEPRECATED is
defined.

See #463435.

gst/gstbin.c

@@ -175,6 +175,7 @@
 #if !defined(GST_DISABLE_LOADSAVE) && !defined(GST_REMOVE_DEPRECATED)
 #undef GstXmlNodePtr
 #define GstXmlNodePtr xmlNodePtr
+#include <libxml/parser.h>
 GstXmlNodePtr gst_object_save_thyself (GstObject * object,
     GstXmlNodePtr parent);
 void gst_object_restore_thyself (GstObject * object, GstXmlNodePtr parent);

gst/gstcaps.c

@@ -75,6 +75,7 @@
 
 #ifdef GST_DISABLE_DEPRECATED
 #if !defined(GST_DISABLE_LOADSAVE) && !defined(GST_REMOVE_DEPRECATED)
+#include <libxml/parser.h>
 xmlNodePtr gst_caps_save_thyself (const GstCaps * caps, xmlNodePtr parent);
 GstCaps *gst_caps_load_thyself (xmlNodePtr parent);
 #endif

gst/gstconfig.h.in

@@ -194,7 +194,9 @@
 /* FIXME: move include to where we need it */
 /*#if (! (defined(GST_DISABLE_LOADSAVE) && defined(GST_DISABLE_REGISTRY)) )*/
 #ifndef GST_DISABLE_XML
+#ifndef GST_DISABLE_DEPRECATED
 # include <libxml/parser.h>
+#endif
 #else
   /* FIXME: 0.11 (replace by GST_DISABLE_XML) */
 # define GST_DISABLE_LOADSAVE_REGISTRY

gst/gstelement.c

@@ -111,6 +111,7 @@ enum
 
 #ifdef GST_DISABLE_DEPRECATED
 #if !defined(GST_DISABLE_LOADSAVE) && !defined(GST_REMOVE_DEPRECATED)
+#include <libxml/parser.h>
 xmlNodePtr gst_object_save_thyself (const GstObject * object,
     xmlNodePtr parent);
 GstObject *gst_object_load_thyself (xmlNodePtr parent);

gst/gstghostpad.c

@@ -78,6 +78,9 @@ static void gst_proxy_pad_dispose (GObject * object);
 static void gst_proxy_pad_finalize (GObject * object);
 
 #if !defined(GST_DISABLE_LOADSAVE) && !defined(GST_REMOVE_DEPRECATED)
+#ifdef GST_DISABLE_DEPRECATED
+#include <libxml/parser.h>
+#endif
 static xmlNodePtr gst_proxy_pad_save_thyself (GstObject * object,
     xmlNodePtr parent);
 #endif

gst/gstobject.c

@@ -154,6 +154,7 @@ static gboolean gst_object_set_name_default (GstObject * object);
 #if !defined(GST_DISABLE_LOADSAVE) && !defined(GST_REMOVE_DEPRECATED)
 #undef GstXmlNodePtr
 #define GstXmlNodePtr xmlNodePtr
+#include <libxml/parser.h>
 GstXmlNodePtr gst_object_save_thyself (GstObject * object,
     GstXmlNodePtr parent);
 void gst_object_restore_thyself (GstObject * object, GstXmlNodePtr parent);

gst/gstpad.c

@@ -119,6 +119,9 @@ static gboolean gst_pad_activate_default (GstPad * pad);
 static gboolean gst_pad_acceptcaps_default (GstPad * pad, GstCaps * caps);
 
 #if !defined(GST_DISABLE_LOADSAVE) && !defined(GST_REMOVE_DEPRECATED)
+#ifdef GST_DISABLE_DEPRECATED
+#include <libxml/parser.h>
+#endif
 static xmlNodePtr gst_pad_save_thyself (GstObject * object, xmlNodePtr parent);
 void gst_pad_load_and_link (xmlNodePtr self, GstObject * parent);
 #endif

gst/gstxml.c

@@ -47,6 +47,7 @@
 
 #ifdef GST_DISABLE_DEPRECATED
 #if !defined(GST_DISABLE_LOADSAVE) && !defined(GST_REMOVE_DEPRECATED)
+#include <libxml/parser.h>
 xmlNodePtr gst_object_save_thyself (const GstObject * object,
     xmlNodePtr parent);
 GstObject *gst_object_load_thyself (xmlNodePtr parent);

plugins/indexers/gstfileindex.c

@@ -27,6 +27,10 @@
 #include <fcntl.h>
 #include <string.h>
 
+#ifdef GST_DISABLE_DEPRECATED
+#include <libxml/parser.h>
+#endif
+
 #include "gstindexers.h"
 
 #define GST_TYPE_FILE_INDEX             \