bundle: add 'portable' parameter to prevent error (issue383) hgsubversion does not fully implement the -r/--rev flag for `hg bundle` so would crash when passed this parameter since the wrapped findcommonoutgoing did not match the parameter list hg expects. With this patch the portable parameter is added to this function, but remains unused so that `hg bundle -r` will properly generate a bundle, but up to tip (in essence ignoring -r parameter).

#!/bin/sh
mkdir temp || exit 1
cd temp
svnadmin create repo
svn co file://`pwd`/repo wc
pushd wc
mkdir -p project/trunk
svn add project
svn ci -m 'trunk'
cd project/trunk
echo a > a
mkdir narf
svn add a narf
svn ci -m 'file and empty dir'
popd
svnadmin dump repo > ../empty_dir_in_trunk_not_repo_root.svndump
echo 'dump in empty_dir_in_trunk_not_repo_root.svndump'
echo 'you can probably delete temp now'