- HTMLparser.c: fixed loop on invalid char in scripts

- parser.c: update to description of xmlIOParseDTD()
- libxml.m4 xmlversion.h.in: changes contributed by
  Michael Schmeing <m.schmeing@internet-factory.de>
- configure.in: preparing for 2.2.7
- Makefile.am: trying to avoid  config.h and acconfig.h
  being included in the distrib
- rebuilt the docs
- configure.in: released 2.2.7
Daniel

parser.c

@@ -8369,6 +8369,7 @@ xmlCreateIOParserCtxt(xmlSAXHandlerPtr sax, void *user_data,
  * Load and parse a DTD
  * 
  * Returns the resulting xmlDtdPtr or NULL in case of error.
+ * @input will be freed at parsing end.
  */
 
 xmlDtdPtr