mlang/tests: We link to mlang.dll, so remove LoadLibraryA

[Detlef Riekenberg]

ConvertINetUnicodeToMultiByte and ConvertINetMultiByteToUnicode
are also exported from mlang.dll 4.72
( http://support.microsoft.com/dllhelp/?fid=79143&l=55&det=1 ),
so use them direct.

mlang.dll in Win95:
http://test.winehq.org/data/b175a43fb8439a33a686512935597d4c43c19733/95_95c-dx8/version.html


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By by ... Detlef