changes for dynload for macOS and OpenBSD: - reverted last commit, b/c of brainfat (wrongly assuming all libs iterated over are opened by dynload) - make use of RTLD_NOLOAD, though, when re-dlopen-ing to get path, for performance (where available)

URGENT:
- discuss character literal return value specifiers (e.g. cmp %al, 'i'), we might wanna use just an int for the size