[PATCH 1 of 3 branch --new] branch: add --new option for creating new branch...

[Harry .]

<quote author="Mads Kiilerich">
branch: add --new option for creating new branches without offending user

--new makes it explicit that the user is creating a new branch and there is
thus no need for the 'did you want a bookmark?' warning.
</quote>

What did people think that hg branch newbranch did, that they will now be enlightened by typing hg branch --new newbranch instead?