Excel's hair line is not "fine dashed". It's a solid line.

Excel may display this line as fine dots on screen, but on paper this is
a ultra thin solid line.  We need to go by what gets printed on paper.

Change-Id: I6640706ff8a16ad26330f8f609a429fb7f14faad

sc/source/filter/excel/xistyle.cxx

@@ -904,7 +904,7 @@ bool lclConvertBorderLine( ::editeng::SvxBorderLine& rLine, const XclImpPalette&
         {   EXC_BORDER_THIN,    table::BorderLineStyle::DOTTED }, // 4 = dotted
         {   EXC_BORDER_THICK,   table::BorderLineStyle::SOLID },  // 5 = thick
         {   EXC_BORDER_THIN,    table::BorderLineStyle::DOUBLE }, // 6 = double
-        {   EXC_BORDER_HAIR,    table::BorderLineStyle::FINE_DASHED },  // 7 = hair
+        {   EXC_BORDER_HAIR,    table::BorderLineStyle::SOLID },  // 7 = hair
         {   EXC_BORDER_MEDIUM,  table::BorderLineStyle::DASHED }, // 8 = med dash
         {   EXC_BORDER_THIN,    table::BorderLineStyle::SOLID },  // 9 = thin dashdot
         {   EXC_BORDER_MEDIUM,  table::BorderLineStyle::SOLID },  // A = med dashdot