bugs fixed in 3.0.3 -- draft, partial list

[Joe Buck]

Neil Booth writes:

> I ported Per's mainline fix for $(prefix)/include not being in the
> preprocessor's search path.
> 
> I fixed a CPP bug where non-trivial macro redefinitions were only
> warned about if -pedantic.

Thanks.  Were there PRs for either of these bugs?  (I'd like the published
list to show PR numbers, to encourage people to file PRs to get their bugs
fixed).