Cxx Sqale Model Project intial import. PClint Rules and some CppCheck Rules
Avoid storing issues multiple times

Reduces the number of issues dramatically
Faster analysis of a project
Better user experience while viewing issues
Avoid NPE and enhanced file name management
Report number of Vera++ issues for logging
Improve rule names for compiler sensor
Enhance and correct PC-lint test files
Incorporate comments
Handle exception for invalid XML char in PC-lint report

- after PC-lint crashed (C++11 issue)
Move getCaseSensitiveFileName() to compiler sensor and write only one warning per unresolvable file path
Use the right separator for FS names.
Issue #46 Support for multi-module configurations
Replace the deprecated ProjectFileSystem with ModuleFileSystem
Get rid on the rfc and cohesion sensor stubs
(if we gonna implemented, we'll do it on top of SSLR and that would lead
to different structure anyway)
Cleanup: throw away the unused CxxFileSensor; sanitize constructors of CxxReportSensor
Rearrange test resources and cleanup the mocking code.
Prevent the squale-model-project stuff and external rules from being packaged