I'll look at this some more, but for now I'll note that the trunk has an
apparent regression in r26081.
setenv OPAL_PREFIX ...
set path = ( $OPAL_PREFIX/bin $path )
setenv LD_LIBRARY_PATH $OPAL_PREFIX/lib
mpirun [--prefix $OPAL_PREFIX] hostname
Up to 26080, the mpirun line runs fine, whether with the --prefix option
or not. Starting in 26081, I get a seg fault when I do *NOT* use
--prefix. (Still runs fine *with* --prefix.) I've seen the problem on
SunOS and on Linux, with Studio, GCC, and Intel compilers.