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/APIconstructors.html b/doc/APIconstructors.html
index 9949bce..e5a8fd2 100644
--- a/doc/APIconstructors.html
+++ b/doc/APIconstructors.html
@@ -243,6 +243,7 @@
 </p><h2>Type xmlDeregisterNodeFunc:</h2><p><a href="html/libxml-globals.html#xmlDeregisterNodeDefault">xmlDeregisterNodeDefault</a><br />
 <a href="html/libxml-globals.html#xmlThrDefDeregisterNodeDefault">xmlThrDefDeregisterNodeDefault</a><br />
 </p><h2>Type xmlDictPtr:</h2><p><a href="html/libxml-dict.html#xmlDictCreate">xmlDictCreate</a><br />
+<a href="html/libxml-dict.html#xmlDictCreateSub">xmlDictCreateSub</a><br />
 </p><h2>Type xmlDocPtr:</h2><p><a href="html/libxml-tree.html#xmlCopyDoc">xmlCopyDoc</a><br />
 <a href="html/libxml-parser.html#xmlCtxtReadDoc">xmlCtxtReadDoc</a><br />
 <a href="html/libxml-parser.html#xmlCtxtReadFd">xmlCtxtReadFd</a><br />
@@ -470,6 +471,7 @@
 </p><h2>Type xmlValidCtxtPtr:</h2><p><a href="html/libxml-valid.html#xmlNewValidCtxt">xmlNewValidCtxt</a><br />
 </p><h2>Type xmlXIncludeCtxtPtr:</h2><p><a href="html/libxml-xinclude.html#xmlXIncludeNewContext">xmlXIncludeNewContext</a><br />
 </p><h2>Type xmlXPathCompExprPtr:</h2><p><a href="html/libxml-xpath.html#xmlXPathCompile">xmlXPathCompile</a><br />
+<a href="html/libxml-xpath.html#xmlXPathCtxtCompile">xmlXPathCtxtCompile</a><br />
 </p><h2>Type xmlXPathContextPtr:</h2><p><a href="html/libxml-xpath.html#xmlXPathNewContext">xmlXPathNewContext</a><br />
 <a href="html/libxml-xpointer.html#xmlXPtrNewContext">xmlXPtrNewContext</a><br />
 </p><h2>Type xmlXPathFunction:</h2><p><a href="html/libxml-xpathInternals.html#xmlXPathFuncLookupFunc">xmlXPathFuncLookupFunc</a><br />