Expand the event_mask field in controller conns to 64 bits

Back in 078d6bcd, we added an event number 0x20, but we didn't make
the event_mask field big enough to compensate.

Patch by "teor". Fixes 13085; bugfix on 0.2.5.1-alpha.
Merge remote-tracking branch 'origin/maint-0.2.5'
Add more escaped() calls in directory.c

Patch from teor to fix 13071.
Merge remote-tracking branch 'origin/maint-0.2.5'