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/APIchunk2.html b/doc/APIchunk2.html
index 1f8037e..9de488d 100644
--- a/doc/APIchunk2.html
+++ b/doc/APIchunk2.html
@@ -326,7 +326,7 @@
 <a href="html/libxml-parserInternals.html#xmlParseEnumeratedType">xmlParseEnumeratedType</a><br />
 <a href="html/libxml-parserInternals.html#xmlParseEnumerationType">xmlParseEnumerationType</a><br />
 <a href="html/libxml-valid.html#xmlValidateAttributeDecl">xmlValidateAttributeDecl</a><br />
-</dd><dt>Equal</dt><dd><a href="html/libxml-parser.html#xmlStrQEqual">xmlStrQEqual</a><br />
+</dd><dt>Equal</dt><dd><a href="html/libxml-xmlstring.html#xmlStrQEqual">xmlStrQEqual</a><br />
 </dd><dt>Escaping</dt><dd><a href="html/libxml-uri.html#xmlURIEscape">xmlURIEscape</a><br />
 </dd><dt>Ethiopic</dt><dd><a href="html/libxml-xmlunicode.html#xmlUCSIsEthiopic">xmlUCSIsEthiopic</a><br />
 </dd><dt>Evaluate</dt><dd><a href="html/libxml-xpath.html#xmlXPathCompiledEval">xmlXPathCompiledEval</a><br />
@@ -379,7 +379,7 @@
 <a href="html/libxml-parserInternals.html#xmlParseEntityDecl">xmlParseEntityDecl</a><br />
 <a href="html/libxml-parserInternals.html#xmlParseExternalID">xmlParseExternalID</a><br />
 <a href="html/libxml-parserInternals.html#xmlParseNotationDecl">xmlParseNotationDecl</a><br />
-</dd><dt>Extract</dt><dd><a href="html/libxml-parser.html#xmlStrsub">xmlStrsub</a><br />
+</dd><dt>Extract</dt><dd><a href="html/libxml-xmlstring.html#xmlStrsub">xmlStrsub</a><br />
 </dd></dl><h2 align="center"><a href="APIchunk0.html">A-B</a>
 <a href="APIchunk1.html">C-C</a>
 <a href="APIchunk2.html">D-E</a>