Obs detected bugs, 2nd stage
Fixes all the HAVE_UNISTD_H glitches and the type-punned pointer stuff (except for cwiid which is in its own submodule). To be merged into !313 (merged).
Fixes all the HAVE_UNISTD_H glitches and the type-punned pointer stuff (except for cwiid which is in its own submodule). To be merged into !313 (merged).