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/APIchunk0.html b/doc/APIchunk0.html
index 5e90931..89cf637 100644
--- a/doc/APIchunk0.html
+++ b/doc/APIchunk0.html
@@ -245,6 +245,8 @@
 </dd><dt>Bopomofo</dt><dd><a href="html/libxml-xmlunicode.html#xmlUCSIsBopomofo">xmlUCSIsBopomofo</a><br />
 </dd><dt>BopomofoExtended</dt><dd><a href="html/libxml-xmlunicode.html#xmlUCSIsBopomofoExtended">xmlUCSIsBopomofoExtended</a><br />
 </dd><dt>Both</dt><dd><a href="html/libxml-parserInternals.html#XML_SUBSTITUTE_BOTH">XML_SUBSTITUTE_BOTH</a><br />
+<a href="html/libxml-pattern.html#xmlStreamPush">xmlStreamPush</a><br />
+<a href="html/libxml-pattern.html#xmlStreamPushAttr">xmlStreamPushAttr</a><br />
 </dd><dt>BoxDrawing</dt><dd><a href="html/libxml-xmlunicode.html#xmlUCSIsBoxDrawing">xmlUCSIsBoxDrawing</a><br />
 </dd><dt>BraillePatterns</dt><dd><a href="html/libxml-xmlunicode.html#xmlUCSIsBraillePatterns">xmlUCSIsBraillePatterns</a><br />
 </dd><dt>Buffer</dt><dd><a href="html/libxml-parser.html#xmlIOParseDTD">xmlIOParseDTD</a><br />