main.lua: Commented out profiling code that calls jit.dump module.
Workaround for issue #37. The jit.dump module isn't linked into snabbswitch.
Build 'snabbswitch' with debug info (luajit -bg). Forget 'snabblite'.

'snabbswitch' now includes Lua debug information (negligable size
cost) and thus prints good error messages.

The 'snabblite' binary isn't built anymore. (Didn't know about it?
Doesn't matter.)