boost: add option to use system layout.

Closes #14749.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
New formula: sqlcipher

Closes #16960.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
open-mpi: add MPI_THREAD_MULTIPLE support.

Closes #16956.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
sbcl 1.1.3

Closes #16952.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
sbcl: 1.1.3 bottles.