Add whisper-go dependency.
Use my fork for bug workaround. see: https://github.com/kisielk/whisper-go/pull/2
Add the sandbox build to heka-build process

CMake is required to pull/patch/build Lua and the sandbox shared
library
Add LD_LIBRARY_PATH juggling to the activate script.
Merge branch 'master' into dev
Add a benchmark test target
Merge pull request #5 from mozilla-services/features/benchmark

Add a benchmark test target
Bump golang revision for syslog fixes.
Merge branch 'dev'

Conflicts:
	Makefile