[bwc] Fixes to bwc.pl
[bwc] Fixes to bwc.pl

- don't call mf_bal in mpi mode.
- print full bwc.pl command line.

git-svn-id: 64df4a12fe8ab3fee7db88f0f615ae26a3770e3d@286 3eaf19af-ecc0-40f6-b43f-672aa0c71c71

mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs