added a new API xmlXIncludeProcessTree() to process XInclude only on a

* xinclude.c include/libxml/xinclude.h: added a new API
  xmlXIncludeProcessTree() to process XInclude only on a subtree
  this should fix bug #115385
Daniel
diff --git a/TODO b/TODO
index c87200a..7073493 100644
--- a/TODO
+++ b/TODO
@@ -17,6 +17,7 @@
 TODO:
 =====
 
+- XInclude at the SAX level (libSRVG)
 - fix the C code prototype to bring back doc/libxml-undocumented.txt
   to a reasonable level
 - Computation of base when HTTP redirect occurs, might affect HTTP