Support namespace-qualified forms for smart indent

[glenjamin]

The current smart indent behaviour for def and with style forms does not handle namespaces correctly.

Before:

(with-open [a b]
  (dothing a))

(with-namespace/open [a b]
  (dothing a))

(namespace/with-open [a b]
                     (dothing a))

After:

(with-open [a b]
  (dothing a))

(with-namespace/open [a b]
                     (dothing a))

(namespace/with-open [a b]
  (dothing a))

[ibdknox]

looks good, thanks.

[cldwalker]

@glenjamin Are the above examples supposed to be function invocations? If so, could you explain why we want with-namespace/open indented but not the others? Without understanding this fix I won't be able to send it upstream once #26 lands

[glenjamin]

The idea is to identify any form which accepts additional forms to execute.

These are usually macros in practice, but the main defining feature is that they either begin with def or with-.

The namespace portion of the var name should be ignored, and only the name itself considered - this is why with-namespace/open should be left alone.

[cldwalker]

Gotcha. Thanks!