Don't use ath_self, but get thread ID directly.
* src/debug.c [HAVE_W32_SYSTEM or __linux] (tid_log_callback): Use native thread ID call for Windows and Linux, ifdef-out-ed. (debug_init): Only call gpgrt_log_set_pid_suffix_cb for relevant systems.
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>