[msvc] Ignore move failure for import library.
Always have at least one public symbol.
Add agl/compat/stdint.h and agl/compat/inttypes.h.
Add agl/compat/stdbool.h.
[msvc] Ignore system includes during dependency generation.
Add agl/compat/alignof.h.
Add agl/compat/malloc.h.
Add agl/compat/stdio.h.