[gnulib-tool-py] Deprecating of rsync and wget

[address@hidden]

Hi Bruno,

I'm currently working on generation of po files and recently I've found a piece 
of code where we decide whether to choose between rsync and wget. I'd like to 
deprecate them both since we have some modules in Python which allow to 
download files without calling system utilities (e.g. httplib2). How do you 
look if I deprecate rsync and wget completely? I'd like to remove as much bash 
code as it is possible at this time, but if you want I can leave this part of 
code unchanged.