Introduced org.sourcepit.b2.files.*
Added ModuleFiles, FileFlagsProvider, ...
Added tests for ModuleFiles#accept(...)
More Tests for ModuleFiles and new methods with file flags as an argument
Introduced FileFlagsInvestigator and added ScmFileFlagsProvider
Refactored FileFlagsProvider API
Added ModuleFiles to IModuleParsingRequest and removed IModuleFilter
Task #112: Implement an access layer for files contained in a module (Merge branch 'pu/112-module-files' into next)