reproduce.tt: Create the checkout dir before an hg clone

For some reason, hg clone from a local (path-based) repo will fail if the parent directory of the destination directory doesn't exist (though it succeeds when cloning from an http repo).

Signed-off-by: Shea Levy <shea@shealevy.com>

Created by  Shea Levy  on May 30, 2013
46BUIQMKDP6QTIEWEJ54E52MKNNP5RUWLUFS4GWNJENDEM6TPOEAC
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