fixing the way testapi.c is generated, fixes bug #161386 fix a comment

* Makefile.am testapi.c doc/Makefile.am: fixing the way testapi.c
  is generated, fixes bug #161386
* dict.c: fix a comment typo
* elfgcchack.h doc/*: regenerated
Daniel
diff --git a/doc/APIchunk15.html b/doc/APIchunk15.html
index afdadd1..03cff70 100644
--- a/doc/APIchunk15.html
+++ b/doc/APIchunk15.html
@@ -382,6 +382,8 @@
 <a href="html/libxml-tree.html#xmlAddChild">xmlAddChild</a><br />
 <a href="html/libxml-tree.html#xmlAddNextSibling">xmlAddNextSibling</a><br />
 <a href="html/libxml-tree.html#xmlAddPrevSibling">xmlAddPrevSibling</a><br />
+<a href="html/libxml-valid.html#xmlCopyElementContent">xmlCopyElementContent</a><br />
+<a href="html/libxml-valid.html#xmlFreeElementContent">xmlFreeElementContent</a><br />
 <a href="html/libxml-chvalid.html#xmlIsBaseChar">xmlIsBaseChar</a><br />
 <a href="html/libxml-chvalid.html#xmlIsBlank">xmlIsBlank</a><br />
 <a href="html/libxml-chvalid.html#xmlIsChar">xmlIsChar</a><br />