4d272e5a97
- switch to the NetBSD identifier system; it is not only better, but also required for porting NetBSD ipcs(1) and ipcrm(1); however, it requires that slots not be moved, and that results in some changes; - synchronize some other things with NetBSD: where keys are kept, as well as various non-permission mode flags; - fix semctl(2) vararg retrieval and message field type; - use SUSPEND instead of weird reply exceptions in the call table; - fix several memory leaks and at least one missing permission check; - improve the atomicity of semop(2) by a small amount, even though its atomicity is still broken at a fundamental level; - use the new cheaper way to retrieve the current time; - resolve all level-5 LLVM warnings. Change-Id: I0c47aacde478b23bb77d628384aeab855a22fdbf