trace2: report peak memory usage of the process

Teach Windows version of git to report peak memory usage
during exit() processing.

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

common-main.c

@@ -41,7 +41,7 @@ int main(int argc, const char **argv)
 
 	trace2_initialize();
 	trace2_cmd_start(argv);
-	trace2_collect_process_info();
+	trace2_collect_process_info(TRACE2_PROCESS_INFO_STARTUP);
 
 	git_setup_gettext();