FILEVERSION is incorrect

In template file dllversion.rc.in
FILEVERSION field is formed like that:
#define VER_FILEVERSION @LCB_VERSION_MAJOR@,@LCB_VERSION_MINOR@,0,0
FILEVERSION VER_FILEVERSION

So when I buikd libcouchbase 2.3.2 the FILEVERSION has value 2,3,0,0,
instead of 2,3,2,0

I think you should fix it with
#define VER_FILEVERSION @LCB_VERSION_MAJOR@,@LCB_VERSION_MINOR@,@LCB_VERSION_PATCH@,0
FILEVERSION VER_FILEVERSION