effect. Replace calls by struct assignment where possible. Replace
clear buffer, copy string to buffer by strncpy(). Use assignment to
clear when that's clearer. Replace overlapping copy through bounce
buffer by memmove(). Replace rest by standard memset() and memcpy().
Also use sizeof() instead of literal array sizes for robustness, and
instead of symbolic array sizes for clarity.
windows. For obvious reasons, such warnings ought to be fixed.
Making compilation abort is the sledgehammer method to force that.
It's a stupid method for us, as we develop on various platforms, and
don't test every single commit under Windows. It gratuitously breaks
programs that work fine. Leave them as warnings, and fix them on
sight.
