funs done:
MakeArgNode
MakeBasetypeArg

This is important since the additions of Rouland do not allow for eexternals to be nested without screwing the code generation up......
We can tackle this later!

actually not much was missing here. However, the treatment of T_hidden received a massive conceptual overhaul.
This was triggered by the observation that SACarg needs to be treated like a nested data structure.....
When ironing that out in compile.c we can equally well make sure we add proper support for nesting throughout....

Fix mt fold sbs

See merge request !129

streamlined the explanation; added a section on the implementation and extracted the two Handle-functions as helpes...

and put quite some more detail into the main comment of MTSPMDF.
This is now feature complete....

started re-writing SPMDF lifting to include a dec_rc on the neutral element after the lifted function

By setting the rc in the stack copy of the descriptor to 2 we are safe now. I also injected tracing info so that it easier to see what is going on just from the trace.
As a consequence of this, the MT version now leaks one copy of the neutral element! This needs another fix.
Finally, I added some comments in MTRMI to explain what exactly it does and to understand that traversal more quickly :-)

[hwloc] fix error on no hwloc.h header

See merge request !127

The declarations in cpubind.h still need the hwloc.h header file,
regardless if we are compiling with HWLOC support or not. This commit
fixes this.

Hotfix for CUDA profiling

See merge request !126

Fix cuda mech (for cudaManaged) memcpy ICMs

See merge request !109

This traversal was replaced by EMR-related traversals.

and add some better documentation

We now also add timers (using GPU timer) to measure the time for
certain events on the GPU (kernel launches, memcpys, allocs, etc.).

When moving to an ad-hoc macro cyclical traversal mechanism, the latest
counter value(s) were never stored, meaning that we never cycled to a
fix-point. This caused several transfers to be left in place which could
otherwise have been elided.

This bug also affected the algebraic wlfi traversal.

on some systems (change in linux kernel maybe?), filter over
HWLOC_OBJ_OS_DEVICE objects leads to seqfault. For HWLOC we do not rely
on any _system_ devices so leaving the filtering to NONE should be fine.

Also updated .gitignore