shell32: fix program search in ShellExecuteEx, quote program name if it contains spaces (resend)

[Juan Lang]

Hi Stefan, I know this is nitpicking, but:
-		memcpy(buffer, sei_tmp.lpFile, idx * sizeof(WCHAR));
+        lstrcpynW(buffer, wszApplicationName, sizeof(buffer)/sizeof(WCHAR));
+	    while((space=strchrW(buffer, ' ')))

You're mixing tabs and spaces here.
--Juan