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)

python/libxml2class.txt

@@ -64,16 +64,7 @@ debugDumpString()
 shellPrintXPathError()
 
 # functions from module encoding
-UTF8Charcmp()
-UTF8Size()
-UTF8Strlen()
-UTF8Strloc()
-UTF8Strndup()
-UTF8Strpos()
-UTF8Strsize()
-UTF8Strsub()
 addEncodingAlias()
-checkUTF8()
 cleanupCharEncodingHandlers()
 cleanupEncodingAliases()
 delEncodingAlias()
@@ -228,6 +219,17 @@ regexpCompile()
 schemaCleanupTypes()
 schemaInitTypes()
 
+# functions from module xmlstring
+UTF8Charcmp()
+UTF8Size()
+UTF8Strlen()
+UTF8Strloc()
+UTF8Strndup()
+UTF8Strpos()
+UTF8Strsize()
+UTF8Strsub()
+checkUTF8()
+
 # functions from module xmlunicode
 uCSIsAegeanNumbers()
 uCSIsAlphabeticPresentationForms()