15c20b8083
When threads were added to the kernel, the pr_pid member of the NT_PRSTATUS note was repurposed to store LWP IDs instead of process IDs. However, the process ID was no longer recorded in core dumps. This change adds a pr_pid field to prpsinfo (NT_PRSINFO). Rather than bumping the prpsinfo version number, note parsers can use the note's payload size to determine if pr_pid is present.