DTrace support

[bgamari]

rts/ghc.mk contains a bunch of logic for producing the glue code for the user-defined tracepoints provided by GHC. This currently isn't implemented.

[snowleopard]

@bgamari Thanks! I assume this is not a blocking issue for merging Hadrian into GHC, so I've assigned it to the GHC Transcendence project (feel free to reassign though).

[bgamari]

Andrey Mokhov <notifications@github.com> writes:

@bgamari Thanks! I assume this is not a blocking issue for merging Hadrian into GHC, so I've assigned it to the `GHC Transcendence` project (feel free to reassign though).

Right, this is falls squarely in the "nice to have" category.