Package management.

[prataprc]

Several crates like llrb, wral, robt are moved back into rdms crate, keeping it fairly independent modules. We are still planning to maintain them as independent crate for foreseeable future. But these crates have proper package management in-place. We have to check their independent crate from and make sure that they are migrated to rdms crate.

• bin/rdms, can be used for performance testing and nightly testing.
• check.sh, needs to be migrated using bin/rdms as the validation program.
• perf.sh, needs to be migrated using bin/rdms as the validation program.