allocations' size above which they are considered "shared" by default (as if
they were performed through SMPI_SHARED_MALLOC macros).
Default = 0 = disabled feature.
- Note : malloc, calloc and free are now overriden by smpicc/cxx by default.
+ Note : malloc, calloc and free are now overridden by smpicc/cxx by default.
This can cause some troubles if codes are already overriding these. If this
is the case, defining SMPI_NO_OVERRIDE_MALLOC in the compilation flags can
help, but will make this feature unusable.