Function sys_multi_mem_blocks_add_allocator 

pub unsafe extern "C" fn sys_multi_mem_blocks_add_allocator(
    group: *mut sys_multi_mem_blocks,
    alloc: *mut sys_mem_blocks,
)

@brief Add an allocator to an allocator group

This adds a known allocator to an existing multi memory blocks allocator group.

@param group Multi memory blocks allocator structure. @param alloc Allocator to add