Merge branch 'newkernel' of github.com:ipython/ipython into upstream-newkernel

Minor work on the GUI support in the kernel.

Change %history to default to 'raw' history.

Fix bug where raw history had '#' prepended to every line

Numerous usability enhancements to the Qt console widget, particularly with regard to key bindings.

Fixed several bugs involving the insertion of new lines. Pressing Enter in the ConsoleWidget now works as expected.

Merge branch 'newkernel' into qtnewkernel

First cut at a generic bracket matcher for Q[Plain]TextEdits.

Update messaging doc with refinements about user variables/expressions.

First draft of guisupport added to lib. Projects should use this code to get GUI application objects and start event loops.