split PMLTQ to multiple cpan distributions

[matyaskopp]

Installing PMLTQ might be difficult because it uses a lot of dependencies. Not every user needs all PMLTQ functionality.

PMLTQ use cases:

• TrEd user - PMLTQ::BtredEvaluator
• PMLTQ::Server - PMLTQ::SqlEvaluator
• CLI user
• treebank manager - commands for web administration: PMLTQ::Command::(version|init|webload|webverify|webdelete)
• treebank converter and database manager - converting and data loading: PMLTQ::Command::(version|init|convert|initdb|load|verify|delete)

  Possible splitting in outline

  Core modules

• PMLTQ::Command::version
• PMLTQ::Command - TODO: Move database and web specific functions to some other module
• PMLTQ::Commands - TODO: Should be DEFAULT_CONFIG split to multiple modules according to use cases?
• ...

  BtredEvaluator modules

• PMLTQ::BtredEvaluator
• dependencies: Core modules

  SqlEvaluator modules

• PMLTQ::SqlEvaluator
• dependencies: Core modules

  CLI modules

• Evaluating throw web API
  • dependencies: Core modules
• Evaluating local files
  • dependencies: BtredEvaluator modules
• Evaluating on database
  • dependencies: SqlEvaluator modules

    Treebank web managing modules

• PMLTQ::Command::(webload|webverify|webdelete)
• dependencies: Core modules

  Treebank data managing modules

• PMLTQ::Command::(init|convert|initdb|load|verify|delete)
• dependencies: Core modules