remove non-UTF8 encoded characters from source tree & format fix

eeschema/libeditframe.h

@@ -268,7 +268,7 @@ public:
      * accordint to the current selected unit and De Morgan selection
      * although it is stored without ? and part id.
      * @param aDC = the current device context
-     * @param aOffset = a draw offset. usually à,0 to draw on the screen, but
+     * @param aOffset = a draw offset. usually 0,0 to draw on the screen, but
      * can be set to page size / 2 to draw or print in SVG format.
      */
     void RedrawComponent( wxDC* aDC, wxPoint aOffset );

gerbview/class_GERBER.cpp

@@ -50,8 +50,8 @@ extern int scaletoIU( double aCoord, bool isMetric );       // defined it rs274d
  *
  * D_CODES:
  *   D01 ... D9 = action codes:
- *   D01 = activating light (lower pen) when di  placement
- *   D02 = light extinction (lift pen) when di  placement
+ *   D01 = activating light (lower pen) when di placement
+ *   D02 = light extinction (lift pen) when di placement
  *   D03 Flash
  *   D09 = VAPE Flash
  *   D10 ... = Indentification Tool (Opening)

gerbview/dcode.cpp

@@ -321,7 +321,7 @@ void GERBVIEW_FRAME::CopyDCodesSizeToItems()
                 gerb_item->m_Shape = GBR_SPOT_RECT;
                 break;
 
-            case APT_POLYGON:                /* spot regular polyg 3 to 1 edges */
+            case APT_POLYGON:
                 gerb_item->m_Shape = GBR_SPOT_POLY;
                 break;
 

pcb_calculator/units_scales.h

@@ -10,7 +10,7 @@
 
 #define UNIT_MM 1e-3            // mm to meter
 #define UNIT_CM 1e-2            // cm to meter
-#define UNIT_MICRON 1e-6        // µm to meter
+#define UNIT_MICRON 1e-6        // um to meter
 #define UNIT_INCH (1e-2*2.54)   // inch to meter
 #define UNIT_MIL (1e-5*2.54)    // mil (or thou) to meter