Based on shm_get's (?) patch at <http://pastebin.com/yCghrjWX>.  According to
SweetShark on IRC, the reason for writing these phony files is:  "IIRC not
having them resulted in the builds being slow n windows as touching them
required forks and windows is unionized and introduced the 35-fork-week or
something."

Change-Id: Ie0e6e2aa4e56ab620325ea55b4513e185db38ae7