better parsing for lists of projects

[Jeff Hammel]

Currently, TracLegosScript uses the same configuration for all projects (non-option and non-variable arguments) on the command line. At the least, variables should be able to be specified on a per-project basis. Somewhat more challenging is the ability to specify other differences, such as templates used. This also provides a more sane structure for the traclegos.parser to return:

    # XXX this is hackish
    # should return:
    # { project: { 'repository': repository, 'templates': options.templates, }
    # for each project
    # or, better yet, legos, { dictionary of arugments to legos.create_project }
    # (except projects isn't an argument....hmmmm)
    # maybe the easy solution is just to make one project per invocation
    return legos, projects, options.templates, repository

(from source:traclegosscript/anyrelease/traclegos/legos.py@4324#L334​)

This could instead return legos (the TracLegos instance) and a dictionary of projects:

return legos, { 'project1': { arguments to create project1}, 'project2': .... } }

Variable parsing will have to account for position. Specifying templates on a per-project basis is harder as this goes against the grain of optparse.OptionParser, and is probably low priority