Merge branch 'mr/opt-set-ptr'

OPT_SET_PTR() implementation was broken on IL32P64 platforms;
it turns out that the macro is not used by any real user.

* mr/opt-set-ptr:
parse-options: remove unused OPT_SET_PTR
parse-options: add cast to correct pointer type to OPT_SET_PTR
MSVC: fix t0040-parse-options crash

diff --cc parse-options.c
Simple merge

diff --cc parse-options.h
Simple merge