Implemenation a section level allocator in cling's RTDyldMemoryManager (Azog).
Implemenation a section level allocator in cling's RTDyldMemoryManager (Azog).

This allow for a single allocation at the beginning of the module and insure that
all the section of the module with be contiguous in memory.

This is a better fix for Fix ROOT-8523 and replace commit
3f7418269714e12d9fc4f17d197fde7199dbae7d (see more detail about
the problem it the log of that commit)

karies/cling,root-mirror/cling,karies/cling,karies/cling,karies/cling,root-mirror/cling,root-mirror/cling,karies/cling,marsupial/cling,marsupial/cling,marsupial/cling,marsupial/cling,karies/cling,marsupial/cling,root-mirror/cling,root-mirror/cling,root-mirror/cling,marsupial/cling