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/APIsymbols.html b/doc/APIsymbols.html
index 92110d8..16401c5 100644
--- a/doc/APIsymbols.html
+++ b/doc/APIsymbols.html
@@ -1402,6 +1402,7 @@
 <a href="html/libxml-encoding.html#xmlDetectCharEncoding">xmlDetectCharEncoding</a><br />
 <a href="html/libxml-dict.html#xmlDict">xmlDict</a><br />
 <a href="html/libxml-dict.html#xmlDictCreate">xmlDictCreate</a><br />
+<a href="html/libxml-dict.html#xmlDictCreateSub">xmlDictCreateSub</a><br />
 <a href="html/libxml-dict.html#xmlDictFree">xmlDictFree</a><br />
 <a href="html/libxml-dict.html#xmlDictLookup">xmlDictLookup</a><br />
 <a href="html/libxml-dict.html#xmlDictOwns">xmlDictOwns</a><br />
@@ -2654,6 +2655,7 @@
 <a href="html/libxml-xpath.html#xmlXPathConvertNumber">xmlXPathConvertNumber</a><br />
 <a href="html/libxml-xpath.html#xmlXPathConvertString">xmlXPathConvertString</a><br />
 <a href="html/libxml-xpathInternals.html#xmlXPathCountFunction">xmlXPathCountFunction</a><br />
+<a href="html/libxml-xpath.html#xmlXPathCtxtCompile">xmlXPathCtxtCompile</a><br />
 <a href="html/libxml-xpathInternals.html#xmlXPathDebugDumpCompExpr">xmlXPathDebugDumpCompExpr</a><br />
 <a href="html/libxml-xpathInternals.html#xmlXPathDebugDumpObject">xmlXPathDebugDumpObject</a><br />
 <a href="html/libxml-xpathInternals.html#xmlXPathDifference">xmlXPathDifference</a><br />