Support for 'initial single line comments' in the pretty footprint format.

This is limited to round tripping the lines of commented text in the
loading and saving to disk through PCBIO::Format() and PCBIO::Parse().
No editing of the comments is given.

pcbnew/class_module.cpp

@@ -53,7 +53,8 @@
 
 
 MODULE::MODULE( BOARD* parent ) :
-    BOARD_ITEM( (BOARD_ITEM*) parent, PCB_MODULE_T )
+    BOARD_ITEM( (BOARD_ITEM*) parent, PCB_MODULE_T ),
+    m_initial_comments( 0 )
 {
     m_Attributs    = MOD_DEFAULT;
     m_Layer        = LAYER_N_FRONT;
@@ -82,7 +83,8 @@ MODULE::MODULE( BOARD* parent ) :
 
 
 MODULE::MODULE( const MODULE& aModule ) :
-    BOARD_ITEM( aModule )
+    BOARD_ITEM( aModule ),
+    m_initial_comments( 0 )
 {
     m_Pos = aModule.m_Pos;
     m_LibRef = aModule.m_LibRef;
@@ -171,6 +173,7 @@ MODULE::~MODULE()
 {
     delete m_Reference;
     delete m_Value;
+    delete m_initial_comments;
 }
 
 
@@ -185,7 +188,7 @@ void MODULE::DrawAncre( EDA_DRAW_PANEL* panel, wxDC* DC, const wxPoint& offset,
 
     if( GetBoard()->IsElementVisible( ANCHOR_VISIBLE ) )
     {
-        GRDrawAnchor( panel->GetClipBox(), DC, m_Pos.x, m_Pos.y, 
+        GRDrawAnchor( panel->GetClipBox(), DC, m_Pos.x, m_Pos.y,
                       dim_ancre,
                       g_ColorsSettings.GetItemColor( ANCHOR_VISIBLE ) );
     }