Ignore netbeans project files.
A little bit of documentation for boost_libraries
Fix the module for lexical_cast
Add script to create metadata file for modules.
Support older versions of git.

The --blob option for 'git config' is pretty new.
A more capable 'resolve_url'.
Support latest changes to libraries format.
Fix documentation handling
Overwrite libraries.xml with latest info
Pull xml parser out of the constructor.
Move library prep back into constructor.
More specific names for from_string/from_file.
Generate json metadata.
Always normalize spaces.

It makes it easier to detect when a library's details have changes. I
could normalize when comparing, but this seems easier. It's okay to
lose this information.
Update from json or xml
Detect when a library has a new field.
Add support for maintainers, and allow multiple authors/maintainers.
Add first maintainers from repo
Update the libraries test.

- 'update' now takes a library object, not a string - because the string
  might be xml or json.
- Categories are stored in alphabetical order.
Fix name of BoostVersion