cleanup the make rebuild in doc, this include new directive to stop

* globals.c xmlwriter.c doc/apibuild.py include/libxml/globals.h
  include/libxml/pattern.h include/libxml/schemasInternals.h
  include/libxml/xmlexports.h include/libxml/xmlwriter.h: cleanup
  the make rebuild in doc, this include new directive to stop
  documentation warnings
* doc/* doc/html/*: rebuilt the docs
* pattern.c xmlreader.c include/libxml/pattern.h
  include/libxml/xmlreader.h: adding xmlTextReaderPreservePattern()
  to save nodes while scanning the tree with the reader, cleanup
  the way element were freed, and xmlTextReaderPreserve()
  implementation, the API might change for namespace binding support
  when compiling patterns.
* doc/examples/*: added reader3.c exposing the xmlTextReaderPreserve()
Daniel
diff --git a/xmlwriter.c b/xmlwriter.c
index f427200..1585933 100644
--- a/xmlwriter.c
+++ b/xmlwriter.c
@@ -984,7 +984,7 @@
 }
 
 /**
- * xmlTextWriterWriteStringLen:
+ * xmlTextWriterWriteRawLen:
  * @writer:  the xmlTextWriterPtr
  * @content:  text string
  * @len:  length of the text string