Cleanup, cleanup .. removed libxml softlink for good cleanup to get 100%

Cleanup, cleanup ..
* configure.in Makefile.am: removed libxml softlink for good
* include/libxml/*.h *.c doc/Makefile.am: cleanup to get
  100% coverage by gtk-doc
Daniel
diff --git a/catalog.c b/catalog.c
index f4b6188..9664c4f 100644
--- a/catalog.c
+++ b/catalog.c
@@ -473,7 +473,7 @@
  *									*
  ************************************************************************/
 
-/*
+/**
  * xmlLoadCatalog:
  * @filename:  a file path
  *
@@ -548,7 +548,7 @@
     return(ret);
 }
 
-/*
+/**
  * xmlLoadCatalogs:
  * @paths:  a list of file path separated by ':' or spaces
  *