Partial implementation for the following DDE APIs:
[wine] / ipc / generic_hash.c
1997-03-05  Alexandre JulliardRelease 970305 wine-970305
1995-09-01  Alexandre JulliardRelease 950901 wine-950901
1995-08-17  Alexandre JulliardRelease 950817 wine-950817
1995-07-29  Alexandre JulliardRelease 950727 wine-950727