These are BOSCO tarballs for several platforms. They are the stripped tarballs from the 8.6.1 release. They were built in the NMI lab from the head of V8_6_1-branch (be533862e3e9b66). The NMI run id was 398585 boscoinstaller is a copy of bosco_findplatform in the source tree. bosco_quickstart is copied out of the source tree.