Append .dll extension in all cases (spotted by Mike Hearn).
[wine] / dlls / oleacc /
drwxr-xr-x   ..
-rw-r--r-- 42 .cvsignore
-rw-r--r-- 165 Makefile.in
-rw-r--r-- 1844 main.c
-rw-r--r-- 690 oleacc.spec