ENH: add CtestCustom.cmake.in to filter out some warnings from the dashboard and replace NoDartCoverage files

ENH MuPaser based Functor for binary mask generation and connected component segmentation application

ENH: refactoring and performance improvements in the implementation of StreamingStatisticsVectorImageFilter

- The filter must merge the different segments in the output
at each AfterThreadedGenerateData call, not at Synthesize step
- GenerateInputRequestedRegion is needed as the filter requires
a padded input region
- Don't save pointers as members when they are not necessary
- Recreate the minipipeline at each iteration for security
- Set the default number of threads to 1, or we have too small
regions