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Malleability focus refactor of Proteo

See merge request martini/malleability_benchmark!5

WIP 2/2. Added option for spawn to allow wrappers around targets processes to use Extrae o Valgrind. Is not fully automatic, as the code has to make a MaM call to allow it correctly.

WIP 1/2. Adding option for spawn to allow wrappers for Valgrind and Extrae to use it by target processes

Bugfix to compute cpus per node when using Slurm functions. In addition, Slurm functions will be checked before Slurm Env variables, as those do not change after a new allocation.

Memleak fixed for zombies before suspend/terminate. Makefile now automatically adds -g when using MAM_DEBUG. Found memleak in types, is necessary to decide how to tackle it properly.

Added new recorded time for malleability. It records the time spent in user redistribution. In addition, bugfixes to ensure comm are correctly disconnected

Added new strategy MULTIPLE_SPAWN. Allows to create a different COMM_WORLD per node with the benefit of allowing zombies to finalize in more situations. Spawn now uses an array to spawn groups instead of only expecting to spawn one group. Minor bug fixes in ProcessDist.c

Improved zombies treatment so its possible to finalize without an abort if group is in only one node. Some enhacements could still be applied. MAM_Finalize returns whether an abort is required or not.

New function to check if a group of processes is using multiple nodes or only one. Needed for changes in Zombies in next commit.

Added new MaM stage for starting the user redistribution stage. Fixes a bug when there is no asynch redistribution. Other minor changes.

Fixed major bug for Merge Shrink with Single strat. Both cannot be applied together. Is a different bug from the previous commit

Added names for setting data in MaM. Valgrind related bugfixes. Bugfix when sending size_t variables.