[$] Reducing the use of non-glibc allocators in Fedora

<p>Memory allocation for applications is a bit of a balancing act betweenvarious factors including CPU performance, memory efficiency, and how thememory is actually being allocated and deallocated by the application. Different programs may have diverse needs,but it is often the kind of workload that the application is expected to handle thatdetermines which memory allocator performs best. That argues for adiversity of memory allocators (and allocation strategies) but, on theother hand, thatcomplicates things for Linux distributions. As a result, Fedora isdiscussing ways to rein in the spread of allocators used by its packages.