doc/tutorial.xml: fix a typo in the example code (thanks Jens!)

test/sum_avg_portable.cpp: regenerated.


[SVN r19136]

libs/function

@@ -1 +1 @@
-Subproject commit 1a6d95733a36e739ced00b942c131ed1c3a27434
+Subproject commit cb3c1b0d1e6da57f9bd71a1ebcfacf3d7c769a7e