Pcbnew: fix incorrect filenames when plotting layers

    }

}/*}}}*/

/** Complete a plot filename: forces the output directory, add a suffix to the name

    and sets the extension if specified */

static void BuildPlotFileName( wxFileName *aFilename, /*{{{*/

/* Complete a plot filename: forces the output directory,

 * add a suffix to the name and sets the specified extension

 * the suffix is usually the layer name

 */

static void BuildPlotFileName( wxFileName *aFilename,

                               const wxString& aOutputDir,

                               wxString aSuffix,

                               const wxString& aSuffix,

                               const wxString& aExtension )

{

    aFilename->SetPath( aOutputDir );

    aFilename->SetExt( aExtension );

    /* remove leading and trailing spaces if any from the suffix, if

       something survives add it to the name; also the suffix can contain

       an extension: if that's the case, apply it */

    aSuffix.Trim( true ); aSuffix.Trim( false );

       something survives add it to the name;

       also the suffix can contain some not allowed chars in filename (/ \ .),

       so change them to underscore

    */

    wxString suffix = aSuffix;

    suffix.Trim( true );

    suffix.Trim( false );

    wxFileName suffix_fn( aSuffix );

    suffix.Replace( wxT("."), wxT("_") );

    suffix.Replace( wxT("/"), wxT("_") );

    suffix.Replace( wxT("\\"), wxT("_") );

    if( suffix_fn.HasName() )

        aFilename->SetName( aFilename->GetName() + wxT( "-" ) + suffix_fn.GetName() );

    if( suffix_fn.HasExt() )

        aFilename->SetExt( suffix_fn.GetExt() );

}/*}}}*/

    if( !suffix.IsEmpty() )

        aFilename->SetName( aFilename->GetName() + wxT( "-" ) + suffix );

}

/** Fix the output directory pathname to absolute and ensure it exists */

static bool EnsureOutputDirectory( wxFileName *aOutputDir, /*{{{*/