change mimalloc_rust build to more strictly follow original mimalloc sources build system#160

Havunen wants to merge 4 commits intopurpleprotocol:masterpurpleprotocol/mimalloc_rust:masterfrom

Havunen:feat/adjust_build_to_match_mimallocHavunen/mimalloc_rust:feat/adjust_build_to_match_mimallocCopy head branch name to clipboard