IOshark support to parse Linux filesystem ftraces.

IOshark support to input filesystem ftracepooints (readpage(s))
to capture and replay mmap'ed IO (which aren't captured by strace).
The new script collect-straces-ftraces.sh enables the necessary
tracepoints, and collects ftraces and straces compiles these into
intermediate bytecodes which ioshark_bench can then execute.

Test: Generate several monkey based workloads, and use the script
mentioned above to generate bytecodes and feed those into
ioshark_bench.

Change-Id: Iae57f5fdcdce0fedfd85c8d64ee006cc8b5b470d
Signed-off-by: Mohan Srinivasan <srmohan@google.com>
12 files changed