a0abf45372
return code from waitpid(). For example, in some cases, when gcc fails to compile the app for some reason, it returns an error status of 1, which is a return code of 256. If we return 256 from main(), only the lower 8 bits are returned which results in a 0 return status from the wrapper compiler (doh!). So be sure that we properly strip out the correct return status from the underlying compiler and return only those 8 bits through main(). This commit was SVN r2175.
This is the world's greatest MPI. ...more to write here should be a short file, referring to the real docs.