Add mterp stub collection to aid porting.
For some of the more complex Dalvik operations it can be handy to see
what gcc outputs in similar circumstances. This adds a file filled with
"trivial" operations to the Dalvik porting documentation.
diff --git a/docs/porting-guide.html b/docs/porting-guide.html
index fd028cc..b5ac387 100644
--- a/docs/porting-guide.html
+++ b/docs/porting-guide.html
@@ -281,7 +281,10 @@
</p><p>
As you implement instructions, the C version and corresponding stub wrapper
will disappear from the output files. Eventually you will have a 100%
-assembly interpreter.
+assembly interpreter. You may find it saves a little time to examine
+the output of your compiler for some of the operations. The
+<a href="porting-proto.c.txt">porting-proto.c</a> sample code can be
+helpful here.
</p>