Fill *bpt with information about breakpoint number n. Returns false if there is no such breakpoint number.
Examples:
#include <dbg.hpp>
// Go through all breakpoints, displaying the address of where they are set.
for (int i = 0; i < get_bpt_qty(); i++)
{
bpt_t bpt;
if (getn_bpt(i, &bpt))
msg("Breakpoint found at %a\n", bpt.ea);
}