more import lib stuff under mingw

[Steven Edwards]

ok I see here my kernel32.spec.def if forwarding the HeapAlloc call to 
ntdll and this seems to be hosed. Mabey something with my binutils is 
hosed. I will upgrade and try again tonight.

HeapAlloc=ntdll.RtlAllocateHeap @638
  HeapCompact@8 @639
  HeapCreate@12 @640
  HeapDestroy@4 @642
  HeapFree=ntdll.RtlFreeHeap @644
  HeapLock@4 @645
  HeapReAlloc=ntdll.RtlReAllocateHeap @647
  HeapSize=ntdll.RtlSizeHeap @649

Thanks
Steven