configury: fix git describe with VPATH
configury: fix a typo in config/opal_config_threads.m4
configury: fix pthread flags for fortran
Merge branch 'master' of https://github.com/open-mpi/ompi
coll/libnbc: fix MPI_Ireduce_scatter for single task communicator
when MPI_IN_PLACE is not used.

that commit fixes a regression introduced
open-mpi/ompi@49e79a9ade6c97e357391923f411e75e38fac346