Add build --package feature.

[micahsnyder]

Add build --package option that copies the items located in directories such as "lib", "bin", "license" files for each of its dependencies to a specified directory, collocating all libraries and binaries in one directory.

• Recipes could define a list of files in dictionary variable named distribute so the --package option knows what files to collect.
  • Two ways of defining the distributables are needed.
    • "library" if the recipe is being used as a dependency.
    • "application" if the recipe is the primary build target.
  • This feature must support globbing, so you can specify a directory or all files within the directory.