Fix issue #1429665 (eeschema doesn't recognize .sch file when the LIBS section...

Fix issue #1429665 (eeschema doesn't recognize .sch file when the LIBS section is empty. But the section is not used, just a comment, therefore can be empty).
Very minor other fixes.

eeschema/load_one_schematic_file.cpp

@@ -50,8 +50,6 @@
 
 bool ReadSchemaDescr( LINE_READER* aLine, wxString& aMsgDiag, SCH_SCREEN* Window );
 
-static void LoadLayers( LINE_READER* aLine );
-
 
 bool SCH_EDIT_FRAME::LoadOneEEFile( SCH_SCREEN* aScreen, const wxString& aFullFileName, bool append )
 {
@@ -142,14 +140,25 @@ again." );
     }
 #endif
 
-    if( !reader.ReadLine() || strncmp( reader, "LIBS:", 5 ) != 0 )
+    // The next lines are the lib list section, and are mainly comments, like:
+    // LIBS:power
+    // the lib list is not used, but is in schematic file just in case.
+    // It is usually not empty, but we accept empty list.
+    // If empty, there is a legacy section, not used
+    // EELAYER i j
+    // and the last line is
+    // EELAYER END
+    // Skip all lines until end end of header EELAYER END is found
+    while( reader.ReadLine() )
     {
-        msgDiag.Printf( _( "<%s> is NOT an Eeschema file!" ), GetChars( aFullFileName ) );
-        DisplayError( this, msgDiag );
-        return false;
-    }
+        line = reader.Line();
 
-    LoadLayers( &reader );
+        while( *line == ' ' )
+            line++;
+
+        if( strnicmp( line, "EELAYER END", 11 ) == 0 )
+            break;  // end of not used header found
+    }
 
     while( reader.ReadLine() )
     {
@@ -270,22 +279,6 @@ again." );
 }
 
 
-static void LoadLayers( LINE_READER* aLine )
-{
-    /* read the layer descr
-     * legacy code, not actually used, so this section is just skipped
-     * read lines like
-     * EELAYER 25  0
-     * EELAYER END
-     */
-
-    while( aLine->ReadLine() )
-    {
-        if( strnicmp( *aLine, "EELAYER END", 11 ) == 0 )
-            break;
-    }
-}
-
 /// Get the length of a string constant, at compile time
 #define SZ( x )         (sizeof(x)-1)
 

pcbnew/class_text_mod.cpp

@@ -262,10 +262,8 @@ void TEXTE_MODULE::Draw( EDA_DRAW_PANEL* panel, wxDC* DC, GR_DRAWMODE draw_mode,
     wxASSERT( m_Parent );
 
     BOARD* brd = GetBoard( );
-
     EDA_COLOR_T color = brd->GetLayerColor( GetLayer() );
 
-
     /* For reference and value suppress the element if the layer it is
      * on is on a disabled side, user text also has standard layer
      * hiding.
@@ -317,15 +315,14 @@ void TEXTE_MODULE::Draw( EDA_DRAW_PANEL* panel, wxDC* DC, GR_DRAWMODE draw_mode,
     if( m_Mirror )
         size.x = -size.x;
 
-    EDA_RECT* clipbox = panel? panel->GetClipBox() : NULL;
-    DrawGraphicText( clipbox, DC, pos, color, GetShownText(), orient,
+    DrawGraphicText( panel->GetClipBox(), DC, pos, color, GetShownText(), orient,
                      size, m_HJustify, m_VJustify, width, m_Italic, m_Bold );
 
     // Enable these line to draw the bounding box (debug tests purposes only)
 #if 0
     {
         EDA_RECT BoundaryBox = GetBoundingBox();
-        GRRect( clipbox, DC, BoundaryBox, 0, BROWN );
+        GRRect( panel->GetClipBox(), DC, BoundaryBox, 0, BROWN );
     }
 #endif
 }