[Matrix]: add debug tools for testing R wrappers in release test.
[Matrix]: add debug tools for testing R wrappers in release test.

zheng-da/FlashX,flashxio/FlashX,icoming/FlashX,icoming/FlashX,icoming/FlashX,icoming/FlashGraph,flashxio/FlashX,zheng-da/FlashX,zheng-da/FlashX,zheng-da/FlashX,icoming/FlashX,icoming/FlashGraph,icoming/FlashGraph,flashxio/FlashX,flashxio/FlashX,flashxio/FlashX,flashxio/FlashX,icoming/FlashX,zheng-da/FlashX,icoming/FlashGraph,icoming/FlashGraph