feat(host): Allocate heap memory at the highest possible address - #857
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…env vars Signed-off-by: Dasaav-dsv <simplydasaav@gmail.com>
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Use
MEM_TOP_DOWNwhen allocating heap memory before handing it over to mimalloc.Also adds support for outside heap introspection env vars ME3_HEAP_MAPPING_FILE and ME3_HEAP_MAPPING_NAME.