ipykit pylaunchers do .ipy now

special case 'sudo' in alias_completer

cd -TAB pads zeros, %clear dhist, some doc changes

add examples to SList.grep doc

SList.grep()

remove dir = dir /on auto alias, it broke other dir auto aliases

Fix pysh profile

- Fixes for doctest support. Need more testing, esp. to be sure they don't introduce any side-effects, since I'm messing with the FakeModule object which Pickle and others depend on. - Small fixes in object inspection. - Restored a number of magics that should NOT have been moved out to ipy_legacy.

callable aliases now get _ip as first arg

added _ip.itpl, to enable var expansion with callable aliases