terminalsize was loaded from a location added to sys.path during
bootstrap. This appeared to be causing import issues. There is no longer
a good reason for terminalsize to be loaded that way, so just moved it
under wlauto.utils so that it can be loaded normally.
The struct used to read events is being padded when built for 64
bit platforms. The padding has been made explicit in the struct, and
matching padding was added when writing the events during recording.
Then number of input event files was being written as a size_t but read
as an int by revent. These types have different sizes with 64bit GCC,
causing revent not being able to replay recorded files. This comint
updates revent to use size_t when both reading and writing.
