code cleanup, especially the function comments. fixed a small bug when

* DOCBparser.c HTMLparser.c c14n.c debugXML.c encoding.c hash.c
  nanoftp.c nanohttp.c parser.c parserInternals.c testC14N.c
  testDocbook.c threads.c tree.c valid.c xmlIO.c xmllint.c xmlmemory.c
  xmlreader.c xmlregexp.c xmlschemas.c xmlschemastypes.c xpath.c:
  code cleanup, especially the function comments.
* tree.c: fixed a small bug when freeing nodes which are XInclude ones.
Daniel
diff --git a/nanohttp.c b/nanohttp.c
index bc4936f..c07587e 100644
--- a/nanohttp.c
+++ b/nanohttp.c
@@ -1419,7 +1419,7 @@
 }
 
 /**
- * xmlNanoHTTPContentLength
+ * xmlNanoHTTPContentLength:
  * @ctx:  the HTTP context
  *
  * Return the specified content length from the HTTP header.  Note that
@@ -1434,7 +1434,7 @@
 }
 
 /**
- * xmlNanoHTTPFetchContent
+ * xmlNanoHTTPFetchContent:
  * @ctx:  the HTTP context
  * @ptr:  pointer to set to the content buffer.
  * @len:  integer pointer to hold the length of the content