Added classes to manage simple tabular data of known structure using a

popup containing a wxGrid object.

BasePicker : Abstract class adding a popup to wxPickerBase  styled with
a wxTextCtrl.
BaseGridPicker : Abstract class adding a wxGrid in the popup.

JsonGridPickerCtrl : UI control storing the tabular data in a JSON
array.
LBoundJsonGridPicker : connect JsonGridPicker to database.
LGridJsonCellEditor : use LBoundJsonGridPicker in other wxGrid objects.
LGridJsonCellRenderer : render cell JSON data.

XmlGridPickerCtrl : UI control storing the tabular data in as XML
document.
LBoundXmlGridPicker : connect XmlGridPicker to database.
LGridXmlCellEditor : grid editor for LBoundXmlGridPicker.
LGridXmlCellRenderer : grid renderer for LBoundXmlGridPicker.

JsonHelper and XmlHelper : for applications to quickly get intent value
from database data..

The structure of managed tabular data :

Column 1 : Intent - this is what we want to store/edit. This can be
telephone numbers, email addresses, instant messaging addresses...
any single line piece of information that can exist many times for one
entity (person, company...).
Column 2 : Type - A short description of the intent : 'Home, Work,
Mobile, Fax, Other...'. It is displayed in a non editable wxComboBox.
Column 3 : Preferred - One line of data can be selected as the preferred
one. It is not mandatory, but it must be a single choice.
Column 4 : Notes - single line notes.

Adjust sql scripts and L7.dox.
Applied ANSI formatting style to all files.

Other changes :

Work around a nasty misbehavior.
Grid columns edited by a translated combobox expect full string
data as cell values. LResultSet::BEData() will report these mapped strings,
instead of database real data. LBoundComboBox::IsDirty() will always be
true even if the editor is unchanged once created.
Simplest workaround : disconnect m_BoundComboBox if unchanged.

LGridTextEditor::ProvideFormEditor() : set the form editor's value
explicitely.; wxTextCtrl does not interpret data it receives

LBoundControl::SetNull must be void.

LBoundGrid : Unbind:: instructions should limit to the widget's id, like Bind::

LConnection::GetReturnedKeys should return NULL.
LConnection::SetData should return void.

Notes : wxJSON must be configured with the same prefix as wxWidgets,
here /usr/local/{wxWidgets,wxWidgets-Release}.

L7/LBoundControl.h

@@ -8,7 +8,7 @@
  */
 
 #ifndef LBOUNDCONTROL_H
-#define	LBOUNDCONTROL_H
+#define LBOUNDCONTROL_H
 
 #include <wx/wx.h>
 #include "LResultSet.h"
@@ -16,6 +16,7 @@
 #define L_SQLNULL wxString(_T("NULL"))
 
 class LResultSet;
+
 /**
  * Abstract base class for controls interacting with database table columns.
  * 
@@ -26,6 +27,7 @@ class LBoundControl
 public:
     LBoundControl();
     virtual ~LBoundControl();
+
     /**
      * Do not use column aliases.
      * @param newColName
@@ -45,14 +47,16 @@ public:
      * @return 
      */
     virtual const wxAny GetData() = 0;
-    virtual bool SetData(const wxAny& newData) = 0;
+    virtual void SetData(const wxAny& newData) = 0;
     virtual void SetResultSet(LResultSet * newResultSet) = 0;
+
     LResultSet* GetResultSet() const
     {
         return m_rs;
     }
     virtual bool IsNull() = 0;
-    virtual bool SetNull() = 0;
+    virtual void SetNull() = 0;
+
     /**
      * If the database column is numeric, use wxEmptystring, else, use a single quote ' .
      * 
@@ -86,5 +90,5 @@ private:
 
 };
 
-#endif	/* LBOUNDCONTROL_H */
+#endif /* LBOUNDCONTROL_H */