[issue13405] Add DTrace probes

[Stan Cox]

Stan Cox <scox at redhat.com> added the comment:

The patch works for systemtap except for one minor nit.  pydtrace.h, created by stap from pydtrace.d, is stap specific.  Could pydtrace.h not be included in <srcdir>/Include so that it is always created at build time in <blddir>/Include?   If PyEval_GetFrame() were passed via function__entry then stap would be able to do something akin to what the ustack helper phelper.d is doing.

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nosy: +scox

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