Make the bin/c and bin/ac scripts work with sh. The scripts are run with
/bin/sh shebang, which fails atleast on ubuntu 12.04 /bin/sh. The sh in
Ubuntu 12.04 is dash.
The fixes are according to the suggestions in http://mywiki.wooledge.org/Bashism
Also run "compare" script with explicit ./bin/ path to support people
who do not have skia/bin in PATH.
Review URL: https://codereview.chromium.org/1139033005
These are the scripts I've been homegrowing for measuring perf impact. I think we found them useful today as a way of sifting through the noise.
BUG=skia:
Review URL: https://codereview.chromium.org/703713002
