Implement constructor tear-off support in analyzer.

[stereotype441]

This issue tracks support of the constructor tearoffs feature. See the enclosing meta-issue for details.

[devoncarew]

cc @srawlins

@franklinyow - it looks like some constructor tear-off implementation issues are starting to be filed; it might be worth creating the github tracking project now, in order to group the related issues?

[srawlins]

Hi @stereotype441 I think you mentioned the first step (after design) is to add the AST nodes. Did you say you would do this? For CFE and/or analyzer?

[stereotype441]

@srawlins yep, new AST nodes added in 81c45e4, and visitor changes added in 7584faf. I have been working on parser support, and hope to have a CL out for that today.