inttest: add missing headers and fix a typo
inttest/logging: fix log level
Implement eflame -p/--profile support

When -p/--profile is enabled, you can select the profiler as follows:

generate flame graph (eflame.svg) from trace (eflame.trace)
$ rebar -p compile profiler=eflame

generate fprof.analysis
$ rebar -p compile

generate fprof.analysis
$ rebar -p compile profiler=fprof
Merge pull request #337 from tuncer/eflame

Implement eflame -p/--profile support