* Actually load librt properly on old Linux systems (fix#7472)
* Made sure SDL & Android honored timeouts properly in some edgy (or not so edgy, in SDL's case) cases (c.f., https://github.com/koreader/koreader-base/pull/1343).
* Try harder not to consume a timer callback when the timerfd backend is in use and `select` timed out *not* because of a timerfd expiring. This would take some particularly heinous timing to reproduce (e.g., a timerfd set, but a task deadline expiring *before* it). May or may not help with #7473.
* Decode `BTN_` KEY codes in verbose debug logs.
* Fix MultiTouch on the H2O (GestureDetector was hard-coding the two slots as 0 & 1, but the H2O kernel is a special snowflake that doesn't use slot 0, instead switching to slot 1 & 2).
8a923e3e77