OSF1 4.0d's cc complains when a non-constant value is used as the
array size of a formal parameter.  The first patch below fixes the
problem without removing the documentation value of the array size at
that point.  I wonder if just commenting out the (variable) array size
would be a better choice.

It also rightfully refuses to compile functions containing automatic
arrays of non-constant sizes.  The second patch below fixes this
problem.

With these two patches, GDB mainline builds on this platform again,
using this picky/dumb compiler.

Ok to install?