Merge my trunk-dev, with following mods: * cd completer: show bookmarks if no other completions are available. * Remove ipy_leo.py. "easy_install ipython-extension" to get it. (done to decouple it from ipython release cycle) * sh profile: easy way to give 'title' to prompt: assign to variable '_prompt_title'. It looks like this:: [~]|1> _prompt_title = 'sudo!' sudo![~]|2> * %rehashx: Aliases no longer contain dots. python3.0 binary will create alias python30. Fixes: #259716 "commands with dots in them don't work" * %cpaste: %cpaste -r repeats the last pasted block. The block is assigned to pasted_block even if code raises exception. * %edit: If you do '%edit pasted_block', pasted_block variable gets updated with new data (so repeated editing makes sense) Test mods: Add test_magic.py, with test_rehashx