Determine whether a trap was for rdtsc more simply (and remove libdisasm dep).
Make VM inference more reliable.
Support the old mmap syscall.
Make the EEXIST check when creating ~/.rr work correctly.
Add support for the timerfd_*() API.
Unify syscall definitions across record*.cc and replay*.cc.
Fix unfinished comment.
access() should be EMU during replay.
Make the getgroups32 syscall EMU and add a test.
Make more syscalls regular that otherwise just need metadata updates.
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