Homebrew/homebrew — pull request #25919 by XL64 (2014-01-15 12:33:03+00:00)
Title: moving to 1.7.4rc1

open-mpi 1.7.3 deadlocks on Maverick on MPI_Init_thread calls, 1.7.4rc1 solves this issue :
see https://svn.open-mpi.org/trac/ompi/ticket/4112