determine values like Fortran alignment (which can only be determined by
running a program) when cross-compiling. By providing cache values, the
programs will not be run at all, and life will be good. Also clean up
some macro interfaces so that they are a bit easier to use, at the cost
of horrid internals ;).
This commit was SVN r8684.
Ensure that OMPI_F77_* are always defined, even if a) a f77 compiler
is not found, or b) the user disables the f77 MPI bindings.
This commit was SVN r2618.
