Revert "exercises/tbb: Ignore build files"

This reverts commit 61e79557f38be06bc38b77a657e14850c622c081.
Revert "exercises: Import Intel TBB examples"

This reverts commit 32bc22749d5cfeb6a893b5555a7e2c718d8cbe29.
Minor alignment fix
Makefile.common: Ignore streams warnings
exercises: Add intel-tbb quicksort example