Provide column numbers to DTrace willExecute/didExecute probes
https://bugs.webkit.org/show_bug.cgi?id=136434

Reviewed by Antti Koivisto.

Source/JavaScriptCore:

Provide the columnNumber and update stubs for !HAVE(DTRACE).

* profiler/ProfileGenerator.cpp:
(JSC::ProfileGenerator::willExecute):
(JSC::ProfileGenerator::didExecute):
* runtime/Tracing.d:
* runtime/Tracing.h:

Tools:

Create a directory for DTrace scripts. Add an example script that
shows how to use static probes provided by JavaScriptCore's profiler.

* Scripts/dtrace/jsc-trace-profiler-events.d: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@173162 268f45cc-cd09-0410-ab3c-d52691b4dbfc