IEEE-1180 compliance issue of DVD2AVI MMX/SSEMMX/SSE2MMX iDCT

Peter Gubanov's 32-bit DVD2AVI MMX/SSEMMX iDCT tested by XMPEG 4.5

Somebody may note that DVD2AVI MMX/SSEMMX iDCT fail at the test of IEEE-1180 compliance by XMPEG 4.5
It's misjudged by the detection routine of XMPEG.
Inside IEEE1180test.cpp of XMPEG source code
```
  _RPT2(_CRT_WARN, "Worst peak error = %d  (%d spec limit 1)\n\n", j,
	 meet = Meets((double)j, 1.0) && meet);
```
(double)j is out of order (return -1.#IND00) because it's lacking EMMS to restore the FPU state after MMX codes executed.

Append __asm emms; before this line.

  __asm emms;
  _RPT2(_CRT_WARN, "Worst peak error = %d  (%d spec limit 1)\n\n", j,
	 meet = Meets((double)j, 1.0) && meet);

(double)j will return 1.0 and DVD2AVI MMX/SSEMMX iDCT pass the test of IEEE-1180 compliance.

DVD2AVI 32-bit MMX/SSEMMX/SSE2MMX iDCT output the same result and they are all IEEE-1180 compliant.