Here are a few changes to make 64-bit build possible.
The changes are mainly to use windows api in the correct way that works for both 32-bit and 64-bit builds.
. Do not include alarm.h as it is not needed.
The code in alarm.h is not complete: all the extern functions are missing and different linkers might complain about this.
. Do not redefine some windows.h types in VICE/types.h as it becomes harder to keep them consistent.
Biggest problem is DWORD_IS_LONG as the best way to define it in linux 64 bit is as an int. Prefer to use StdAfx.h.
Changes to ease code compilation in GCC.
Disk_t and HDD contain a std::string and for this reason they need a proper constructor, ZeroMemory is not guaranteed to work.
