Pcbnew: Fix typo in 2 filenames. Add comments in ratsnest.cpp.

Fix bug 887202.

common/hotkeys_basic.cpp

@@ -689,7 +689,7 @@ void EDA_BASE_FRAME::ImportHotkeyConfigFromFile( struct EDA_HOTKEY_CONFIG* aDesc
                                  mask,
                                  this,
                                  wxFD_OPEN,
-                                 TRUE );
+                                 true );
 
     if( filename.IsEmpty() )
         return;
@@ -710,14 +710,14 @@ void EDA_BASE_FRAME::ExportHotkeyConfigToFile( struct EDA_HOTKEY_CONFIG* aDescLi
     wxString path = wxGetCwd();
     wxString filename;
 
-    filename = EDA_FileSelector( _( "Read Hotkey Configuration File:" ),
+    filename = EDA_FileSelector( _( "Write Hotkey Configuration File:" ),
                                  path,
                                  filename,
                                  ext,
                                  mask,
                                  this,
-                                 wxFD_OPEN,
-                                 TRUE );
+                                 wxFD_OPEN | wxFD_SAVE,
+                                 true );
 
     if( filename.IsEmpty() )
         return;

pcbnew/CMakeLists.txt

@@ -132,7 +132,7 @@ set(PCBNEW_SRCS
     magnetic_tracks_functions.cpp
     menubar_modedit.cpp
     menubar_pcbframe.cpp
-    minumun_spanning_tree.cpp
+    minimun_spanning_tree.cpp
     mirepcb.cpp
     modedit.cpp
     modedit_onclick.cpp

pcbnew/minumun_spanning_tree.cpp → pcbnew/minimun_spanning_tree.cpp

 /**
- * @file minumun_spanning_tree.cpp
+ * @file minimun_spanning_tree.cpp
  */
 
 /*
@@ -31,7 +31,7 @@
 
 #include <limits.h>
 
-#include "minumun_spanning_tree.h"
+#include "minimun_spanning_tree.h"
 #include "class_pad.h"
 
 /*

pcbnew/minumun_spanning_tree.h → pcbnew/minimun_spanning_tree.h

 /**
- * @file minumun_spanning_tree.h
+ * @file minimun_spanning_tree.h
  */
 
 #include <vector>