added io1.c an example ox xmlIO usage and io1.res test result, fixed a

* doc/examples/*: added io1.c an example ox xmlIO usage and io1.res
  test result, fixed a awful lot of memory leaks showing up in
  testWriter.c, changed the examples and the Makefiles to test
  memory leaks.
* xmlwriter.c: fixed a memory leak
* Makefile.am: run the doc/examples regression tests as part of
  make tests
* xpath.c include/libxml/xpath.h: added xmlXPathCtxtCompile() to
  compile an XPath expression within a context, currently the goal
  is to be able to reuse the XSLT stylesheet dictionnary, but this
  opens the door to others possible optimizations.
* dict.c include/libxml/dict.h: added xmlDictCreateSub() which allows
  to build a new dictionnary based on another read-only dictionnary.
  This is needed for XSLT to keep the stylesheet dictionnary read-only
  while being able to reuse the strings for the transformation
  dictionnary.
* xinclude.c: fixed a dictionnar reference counting problem occuring
  when document parsing failed.
* testSAX.c: adding option --repeat for timing 100times the parsing
* doc/* : rebuilt all the docs
Daniel
diff --git a/doc/APIchunk22.html b/doc/APIchunk22.html
index b689d43..3e8d7e7 100644
--- a/doc/APIchunk22.html
+++ b/doc/APIchunk22.html
@@ -136,6 +136,7 @@
 <a href="html/libxml-xmlstring.html#xmlStrcasestr">xmlStrcasestr</a><br />
 <a href="html/libxml-xmlstring.html#xmlStrchr">xmlStrchr</a><br />
 <a href="html/libxml-xmlstring.html#xmlStrstr">xmlStrstr</a><br />
+</dd><dt>searched</dt><dd><a href="html/libxml-dict.html#xmlDictCreateSub">xmlDictCreateSub</a><br />
 </dd><dt>section</dt><dd><a href="html/libxml-HTMLtree.html#HTML_PRESERVE_NODE">HTML_PRESERVE_NODE</a><br />
 <a href="html/libxml-uri.html#xmlBuildURI">xmlBuildURI</a><br />
 <a href="html/libxml-catalog.html#xmlCatalogSetDefaultPrefer">xmlCatalogSetDefaultPrefer</a><br />
@@ -603,6 +604,7 @@
 <a href="html/libxml-xpathInternals.html#xmlXPathStringLengthFunction">xmlXPathStringLengthFunction</a><br />
 </dd><dt>stringi</dt><dd><a href="html/libxml-xpathInternals.html#xmlXPathSubstringAfterFunction">xmlXPathSubstringAfterFunction</a><br />
 </dd><dt>strings</dt><dd><a href="html/libxml-parser.html#_xmlParserCtxt">_xmlParserCtxt</a><br />
+<a href="html/libxml-dict.html#xmlDictCreateSub">xmlDictCreateSub</a><br />
 <a href="html/libxml-parser.html#xmlGetFeaturesList">xmlGetFeaturesList</a><br />
 <a href="html/libxml-pattern.html#xmlPatterncompile">xmlPatterncompile</a><br />
 <a href="html/libxml-xmlregexp.html#xmlRegexpCompile">xmlRegexpCompile</a><br />