[PATCH v1] [GSoC Microproject] Implement -e trace=%id option

[Daniel Lim]

I've not yet implemented tests for this change yet, as I'm not sure
how to. I've taken a look at a test case for a similar change (-e
trace=%fstat), containing the following:

oldstat -a32
stat -a32
stat64 -a32

May I know what does the -a argument do?

Also, I'm still getting many failures for `make check` as mentioned
yesterday, so I wasn't able to test it locally. So, I pushed my
changes to Github for Travis CI to run tests on it. It seems to be
failing everywhere without any clear error description. May I get any
pointers as to what is going wrong?

Thanks.

--
Daniel