preparing release of 2.6.18 updated docs and rebuilt reactivated gcc

* NEWS configure.in testapi.c doc/*: preparing release of 2.6.18
  updated docs and rebuilt
* libxml.spec.in: reactivated gcc profiling for gcc >= 4.0.0
Daniel
diff --git a/doc/APIconstructors.html b/doc/APIconstructors.html
index b8e7628..9372c05 100644
--- a/doc/APIconstructors.html
+++ b/doc/APIconstructors.html
@@ -481,7 +481,8 @@
 </p><h2>Type xmlSchemaTypePtr:</h2><p><a href="html/libxml-xmlschemastypes.html#xmlSchemaGetBuiltInListSimpleTypeItemType">xmlSchemaGetBuiltInListSimpleTypeItemType</a><br />
 <a href="html/libxml-xmlschemastypes.html#xmlSchemaGetBuiltInType">xmlSchemaGetBuiltInType</a><br />
 <a href="html/libxml-xmlschemastypes.html#xmlSchemaGetPredefinedType">xmlSchemaGetPredefinedType</a><br />
-</p><h2>Type xmlSchemaValPtr:</h2><p><a href="html/libxml-xmlschemastypes.html#xmlSchemaNewNOTATIONValue">xmlSchemaNewNOTATIONValue</a><br />
+</p><h2>Type xmlSchemaValPtr:</h2><p><a href="html/libxml-xmlschemastypes.html#xmlSchemaCopyValue">xmlSchemaCopyValue</a><br />
+<a href="html/libxml-xmlschemastypes.html#xmlSchemaNewNOTATIONValue">xmlSchemaNewNOTATIONValue</a><br />
 <a href="html/libxml-xmlschemastypes.html#xmlSchemaNewStringValue">xmlSchemaNewStringValue</a><br />
 </p><h2>Type xmlSchemaValidCtxtPtr:</h2><p><a href="html/libxml-xmlschemas.html#xmlSchemaNewValidCtxt">xmlSchemaNewValidCtxt</a><br />
 </p><h2>Type xmlStreamCtxtPtr:</h2><p><a href="html/libxml-pattern.html#xmlPatternGetStreamCtxt">xmlPatternGetStreamCtxt</a><br />