moved string and UTF8 routines out of parser.c and encoding.c into a new

* encoding.c, parser.c, xmlstring.c, Makefile.am,
  include/libxml/Makefile.am, include/libxml/catalog.c,
  include/libxml/chvalid.h, include/libxml/encoding.h,
  include/libxml/parser.h, include/libxml/relaxng.h,
  include/libxml/tree.h, include/libxml/xmlwriter.h,
  include/libxml/xmlstring.h:
  moved string and UTF8 routines out of parser.c and encoding.c
  into a new module xmlstring.c with include file
  include/libxml/xmlstring.h mostly using patches from Reid
  Spencer.  Since xmlChar now defined in xmlstring.h, several
  include files needed to have a #include added for safety.
* doc/apibuild.py: added some additional sorting for various
  references displayed in the APIxxx.html files.  Rebuilt the
  docs, and also added new file for xmlstring module.
* configure.in: small addition to help my testing; no effect on
  normal usage.
* doc/search.php: added $_GET[query] so that persistent globals
  can be disabled (for recent versions of PHP)
diff --git a/doc/APIchunk3.html b/doc/APIchunk3.html
index 9fc3012..17625ae 100644
--- a/doc/APIchunk3.html
+++ b/doc/APIchunk3.html
@@ -87,8 +87,8 @@
 <a href="html/libxml-xpathInternals.html#xmlXPathTranslateFunction">xmlXPathTranslateFunction</a><br />
 </dd><dt>Form</dt><dd><a href="html/libxml-uri.html#xmlBuildURI">xmlBuildURI</a><br />
 </dd><dt>Formating</dt><dd><a href="html/libxml-HTMLtree.html#htmlDocContentDumpOutput">htmlDocContentDumpOutput</a><br />
-</dd><dt>Formats</dt><dd><a href="html/libxml-parser.html#xmlStrPrintf">xmlStrPrintf</a><br />
-<a href="html/libxml-parser.html#xmlStrVPrintf">xmlStrVPrintf</a><br />
+</dd><dt>Formats</dt><dd><a href="html/libxml-xmlstring.html#xmlStrPrintf">xmlStrPrintf</a><br />
+<a href="html/libxml-xmlstring.html#xmlStrVPrintf">xmlStrVPrintf</a><br />
 <a href="html/libxml-xpathInternals.html#xmlXPatherror">xmlXPatherror</a><br />
 </dd><dt>Formed</dt><dd><a href="html/libxml-parser.html#xmlRecoverDoc">xmlRecoverDoc</a><br />
 <a href="html/libxml-parser.html#xmlRecoverFile">xmlRecoverFile</a><br />