Upgrade to libxml 2.9.2 and libxslt 1.1.28

third_party/libxml/src/include/libxml/DOCBparser.h

Index: third_party/libxml/src/include/libxml/DOCBparser.h
diff --git a/third_party/libxml/src/include/libxml/DOCBparser.h b/third_party/libxml/src/include/libxml/DOCBparser.h
index 461d4ee802d45dfcc598101e74680a583431c841..9394fa71bddc597f5f9d71273e06bfe010f7124d 100644
--- a/third_party/libxml/src/include/libxml/DOCBparser.h
+++ b/third_party/libxml/src/include/libxml/DOCBparser.h
@@ -47,44 +47,44 @@ XMLPUBFUN int XMLCALL
                                         const unsigned char *in,
                                         int *inlen, int quoteChar);
 
-XMLPUBFUN docbDocPtr XMLCALL             
+XMLPUBFUN docbDocPtr XMLCALL
 		     docbSAXParseDoc   (xmlChar *cur,
                                         const char *encoding,
                                         docbSAXHandlerPtr sax,
                                         void *userData);
-XMLPUBFUN docbDocPtr XMLCALL             
+XMLPUBFUN docbDocPtr XMLCALL
 		     docbParseDoc      (xmlChar *cur,
                                         const char *encoding);
-XMLPUBFUN docbDocPtr XMLCALL             
+XMLPUBFUN docbDocPtr XMLCALL
 		     docbSAXParseFile  (const char *filename,
                                         const char *encoding,
                                         docbSAXHandlerPtr sax,
                                         void *userData);
-XMLPUBFUN docbDocPtr XMLCALL             
+XMLPUBFUN docbDocPtr XMLCALL
 		     docbParseFile     (const char *filename,
                                         const char *encoding);
 
 /**
  * Interfaces for the Push mode.
  */
-XMLPUBFUN void XMLCALL                  
+XMLPUBFUN void XMLCALL
 		     docbFreeParserCtxt      (docbParserCtxtPtr ctxt);
-XMLPUBFUN docbParserCtxtPtr XMLCALL     
+XMLPUBFUN docbParserCtxtPtr XMLCALL
 		     docbCreatePushParserCtxt(docbSAXHandlerPtr sax,
                                               void *user_data,
                                               const char *chunk,
                                               int size,
                                               const char *filename,
                                               xmlCharEncoding enc);
-XMLPUBFUN int XMLCALL                   
+XMLPUBFUN int XMLCALL
 		     docbParseChunk          (docbParserCtxtPtr ctxt,
                                               const char *chunk,
                                               int size,
                                               int terminate);
-XMLPUBFUN docbParserCtxtPtr XMLCALL       
+XMLPUBFUN docbParserCtxtPtr XMLCALL
 		     docbCreateFileParserCtxt(const char *filename,
                                               const char *encoding);
-XMLPUBFUN int XMLCALL                   
+XMLPUBFUN int XMLCALL
 		     docbParseDocument       (docbParserCtxtPtr ctxt);
 
 #ifdef __cplusplus