Parser

- Added static method to scan argv[] for overrides without a parse tree, so
  that any rc:<file> arguments can be used to locate the rc file, load it, and
  proceed with command line parsing which relies on things like rc.dateformat.
Parser

- Fixed bug where ::findAttribute and ::findAttributeModifier were scanning
  all nodes, but thinking that '--' was a tag, not a raw value.
Context

- Reorganized ::inintialize sequence regarding Parser::initialize and the need
  for the rc file to be loaded (and/or overridden) before full parsing could
  proceed.