Fix LIB_TEXT plotting alignment

LIB_TEXT is not all aligned to the center, so place the proper flags
when calling Plot.  This requires handling alignment offsets properly
when rotated as well

eeschema/lib_text.cpp

@@ -277,6 +277,26 @@ void LIB_TEXT::Plot( PLOTTER* plotter, bool aBackground, const VECTOR2I& offset,
     // convert coordinates from draw Y axis to symbol_editor Y axis
     bBox.RevertYAxis();
     VECTOR2I txtpos = bBox.Centre();
+    TEXT_ATTRIBUTES attrs = GetAttributes();
+
+    if( attrs.m_Angle == ANGLE_VERTICAL )
+    {
+        switch( attrs.m_Halign )
+        {
+        case GR_TEXT_H_ALIGN_LEFT:   txtpos.y = bBox.GetTop();   break;
+        case GR_TEXT_H_ALIGN_CENTER: txtpos.y = bBox.GetCenter().y; break;
+        case GR_TEXT_H_ALIGN_RIGHT:  txtpos.y = bBox.GetBottom();      break;
+        }
+    }
+    else
+    {
+        switch( attrs.m_Halign )
+        {
+        case GR_TEXT_H_ALIGN_LEFT:   txtpos.x = bBox.GetLeft();     break;
+        case GR_TEXT_H_ALIGN_CENTER: txtpos.x = bBox.GetCenter().x; break;
+        case GR_TEXT_H_ALIGN_RIGHT:  txtpos.x = bBox.GetRight();    break;
+        }
+    }
 
     // The text orientation may need to be flipped if the transformation matrix causes xy
     // axes to be flipped.
@@ -307,7 +327,7 @@ void LIB_TEXT::Plot( PLOTTER* plotter, bool aBackground, const VECTOR2I& offset,
         font = KIFONT::FONT::GetFont( settings->GetDefaultFont(), IsBold(), IsItalic() );
 
     plotter->Text( pos, color, GetText(), t1 ? ANGLE_HORIZONTAL : ANGLE_VERTICAL, GetTextSize(),
-                   GR_TEXT_H_ALIGN_CENTER, GR_TEXT_V_ALIGN_CENTER, penWidth, IsItalic(), IsBold(),
+                   GetHorizJustify(), GetVertJustify(), penWidth, IsItalic(), IsBold(),
                    true, font );
 }