Fix #1245

Close #1244

Use ThreadData to get the WDQueue in DBF

Closes #1242

See merge request !46

Fix/gpu ocl oversubscription

See merge request !48

Do not fail when the GPU or OpenCL plugin try to reserve an SMP processor but there are not available. Instead, the runtime will show a warning and share the core with another thread

- Capture DLB_Init error code and disable DLB if needed
- Add verbosity to some DLB errors

Implement --smp-threads-per-core option

See merge request !47

This option limits the number of threads per core created in SMT machines, while
keeping the same affinity mask by binding to multiple hwthreads inside the core.

gcc-8 requires an alias function to have the same exact return type

The main WD should be implicit to honor the implicit parallel
of size 1 that executes the main program.

As a side effect, the main WD in OmpSs can no longer ignore the
barrier construct and must be explicitly prevented.

Resolve "Extrae version check and cross-compilation"

Closes #1241

See merge request !45

Program checks can cause problems when cross-compiling

Recent lock in lendCpu (5cd5ccbe) may cause deadlocks

Implement malleable  worksharings

See merge request !44

Dynamic and Guided Worksharings WD submission now only creates
a single WD representative instead of distributing the work.
Idle threads will participate if needed, and will copy the WD
at dequeue time.

Replace remaining calls to WD::canRunIn(PE)

See merge request !43

Fix/pe active device

See merge request !42

Previously, the WD was assuming that the active device in the PE was the first one

Method WD::canRunIn(PE) moved to PE::canRun(WD) because it iterates over all PEdevices, it should be a PE method

Fix/reserve smp pe

See merge request !41