[MinGW-dvlpr] New patch for gcc 4.1.1 for x86_64 support

[Kai T. <Kai...@on...>]

Hello,

I want to share with you the new version of the gcc 4.1.1 patch for 
mingw64. The current version of the patch has the following changes 
compared to the previous one:

- base types - as long and long long - having MS-abi layout.
- fastcall & cdecl are treated by the backend.
- register calling convention is equivalent to MS-abi (so far as I 
tested). Many thanks to Filip Navara for a good starting point for this 
feature.
- gcc uses medium code model for this target by default.
- gcc uses for register parameters for this target 64-bit width passing 
registers
- the stack-probing built-in code of gcc is adjusted to support this 
target too.
- built-in types size_t, ptrdiff_t, etc. have now the base type "long 
long"

If somebody want to support me while porting, be welcome ...

Best Regards,
 i.A. Kai Tietz