linker: only refer to loaded modules in KernelElf::globalLookupSymbol, fixes nasty GPF when backtracing on x86_64
debugger: memory inspector can now accept unsigned native addresses to inspect, backtracer states why DWARF backtracing is not available (not built in - has it ever?)
vfs: warn when mappings fail in AnonymousMemoryMap::trap
native: remove stdint.h, provided by toolchain
x64: mark reserved part of userspace address space as the dynamic linker address, which is slightly below the heap address