Update libxml to 2.7.7.

third_party/libxml/include/libxml/xmlschemas.h

Index: third_party/libxml/include/libxml/xmlschemas.h
diff --git a/third_party/libxml/include/libxml/xmlschemas.h b/third_party/libxml/include/libxml/xmlschemas.h
index 15faef582cff1d25f30f93e58d30a3aa6a834000..752bc3ad79cd1d0f30b39e1974861e9060a2a862 100644
--- a/third_party/libxml/include/libxml/xmlschemas.h
+++ b/third_party/libxml/include/libxml/xmlschemas.h
@@ -56,7 +56,7 @@ typedef enum {
 
 /*
 * ATTENTION: Change xmlSchemaSetValidOptions's check
-* for invalid values, if adding to the validation 
+* for invalid values, if adding to the validation
 * options below.
 */
 /**
@@ -85,11 +85,28 @@ typedef struct _xmlSchema xmlSchema;
 typedef xmlSchema *xmlSchemaPtr;
 
 /**
- * A schemas validation context
+ * xmlSchemaValidityErrorFunc:
+ * @ctx: the validation context
+ * @msg: the message
+ * @...: extra arguments
+ *
+ * Signature of an error callback from an XSD validation
+ */
+typedef void (XMLCDECL *xmlSchemaValidityErrorFunc) (void *ctx, const char *msg, ...) LIBXML_ATTR_FORMAT(2,3);
+
+/**
+ * xmlSchemaValidityWarningFunc:
+ * @ctx: the validation context
+ * @msg: the message
+ * @...: extra arguments
+ *
+ * Signature of a warning callback from an XSD validation
  */
-typedef void (XMLCDECL *xmlSchemaValidityErrorFunc) (void *ctx, const char *msg, ...);
-typedef void (XMLCDECL *xmlSchemaValidityWarningFunc) (void *ctx, const char *msg, ...);
+typedef void (XMLCDECL *xmlSchemaValidityWarningFunc) (void *ctx, const char *msg, ...) LIBXML_ATTR_FORMAT(2,3);
 
+/**
+ * A schemas validation context
+ */
 typedef struct _xmlSchemaParserCtxt xmlSchemaParserCtxt;
 typedef xmlSchemaParserCtxt *xmlSchemaParserCtxtPtr;
 
@@ -99,16 +116,16 @@ typedef xmlSchemaValidCtxt *xmlSchemaValidCtxtPtr;
 /*
  * Interfaces for parsing.
  */
-XMLPUBFUN xmlSchemaParserCtxtPtr XMLCALL 
+XMLPUBFUN xmlSchemaParserCtxtPtr XMLCALL
 	    xmlSchemaNewParserCtxt	(const char *URL);
-XMLPUBFUN xmlSchemaParserCtxtPtr XMLCALL 
+XMLPUBFUN xmlSchemaParserCtxtPtr XMLCALL
 	    xmlSchemaNewMemParserCtxt	(const char *buffer,
 					 int size);
 XMLPUBFUN xmlSchemaParserCtxtPtr XMLCALL
 	    xmlSchemaNewDocParserCtxt	(xmlDocPtr doc);
-XMLPUBFUN void XMLCALL		
+XMLPUBFUN void XMLCALL
 	    xmlSchemaFreeParserCtxt	(xmlSchemaParserCtxtPtr ctxt);
-XMLPUBFUN void XMLCALL		
+XMLPUBFUN void XMLCALL
 	    xmlSchemaSetParserErrors	(xmlSchemaParserCtxtPtr ctxt,
 					 xmlSchemaValidityErrorFunc err,
 					 xmlSchemaValidityWarningFunc warn,
@@ -125,19 +142,19 @@ XMLPUBFUN int XMLCALL
 XMLPUBFUN int XMLCALL
 		xmlSchemaIsValid	(xmlSchemaValidCtxtPtr ctxt);
 
-XMLPUBFUN xmlSchemaPtr XMLCALL	
+XMLPUBFUN xmlSchemaPtr XMLCALL
 	    xmlSchemaParse		(xmlSchemaParserCtxtPtr ctxt);
-XMLPUBFUN void XMLCALL		
+XMLPUBFUN void XMLCALL
 	    xmlSchemaFree		(xmlSchemaPtr schema);
 #ifdef LIBXML_OUTPUT_ENABLED
-XMLPUBFUN void XMLCALL		
+XMLPUBFUN void XMLCALL
 	    xmlSchemaDump		(FILE *output,
 					 xmlSchemaPtr schema);
 #endif /* LIBXML_OUTPUT_ENABLED */
 /*
  * Interfaces for validating
  */
-XMLPUBFUN void XMLCALL		
+XMLPUBFUN void XMLCALL
 	    xmlSchemaSetValidErrors	(xmlSchemaValidCtxtPtr ctxt,
 					 xmlSchemaValidityErrorFunc err,
 					 xmlSchemaValidityWarningFunc warn,
@@ -157,11 +174,11 @@ XMLPUBFUN int XMLCALL
 XMLPUBFUN int XMLCALL
 	    xmlSchemaValidCtxtGetOptions(xmlSchemaValidCtxtPtr ctxt);
 
-XMLPUBFUN xmlSchemaValidCtxtPtr XMLCALL	
+XMLPUBFUN xmlSchemaValidCtxtPtr XMLCALL
 	    xmlSchemaNewValidCtxt	(xmlSchemaPtr schema);
-XMLPUBFUN void XMLCALL			
+XMLPUBFUN void XMLCALL
 	    xmlSchemaFreeValidCtxt	(xmlSchemaValidCtxtPtr ctxt);
-XMLPUBFUN int XMLCALL			
+XMLPUBFUN int XMLCALL
 	    xmlSchemaValidateDoc	(xmlSchemaValidCtxtPtr ctxt,
 					 xmlDocPtr instance);
 XMLPUBFUN int XMLCALL
@@ -178,8 +195,11 @@ XMLPUBFUN int XMLCALL
 					 const char * filename,
 					 int options);
 
+XMLPUBFUN xmlParserCtxtPtr XMLCALL
+	    xmlSchemaValidCtxtGetParserCtxt(xmlSchemaValidCtxtPtr ctxt);
+
 /*
- * Interface to insert Schemas SAX velidation in a SAX stream
+ * Interface to insert Schemas SAX validation in a SAX stream
  */
 typedef struct _xmlSchemaSAXPlug xmlSchemaSAXPlugStruct;
 typedef xmlSchemaSAXPlugStruct *xmlSchemaSAXPlugPtr;