Custom apps outside the tree

[Mike Moretti]

Hi,

Is there any way to do custom apps outside the tree without "pooping" in 
the apps directory?  The docs show 3 ways to do custom apps, but they 
all require modifying the apps directory in some way, either by putting 
your custom apps in the apps directory, or making a symlink there.  I'd 
prefer not to modify the apps directory at all, to make it easier to 
update from the official apps git repo when new versions come out.  This 
also gets in the way of us using the apps directory as a git submodule.

Thanks,
-m