LZCopy mantain the timestamp in expanded file

[Marcelo Duarte]

Recently, I have a problem installing a program and post a message in 
wine-devel, search bugzilla, and none results.
The current implementation of LZCopy() only expand the file to new file, and 
after some tests I checked that the the window$ LZCopy mantain the modified 
date of expanded file the same of the original file.

I do some tests, and after the patch, it runs correctly.
It is the small test program:
#include <windows.h>

int main(int argc, char *argv[])
{
  HANDLE src, dest;
  //INT lzSrc, lzDest;

if (argc < 3) {
    printf("testlz32 [file.ex_] [file.ext]\n");
    return 0;
  }
  // I do not use LZOpenFIle, LZInit, LZClose, etc so I am sure that LZCopy is 
the correct local of the patch.
  src = CreateFile(argv[1], GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, 0);
  dest = CreateFile(argv[2], GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, 0);
  //lzSrc = LZInit(src);
  //lzDest = LZInit(dest);
  LZCopy(src, dest);	//  LZCopy(lzSrc, lzDest);
  //LZClose(lzSrc);
  //LZClose(lzDest);
  CloseHandle(src);
  CloseHandle(dest);
  return 0;
}

Changelog:
- LZCopy: modified timestamp of a expanded file have to be the same of 
original file.