BEAWARE all game functionality is disabled with this commit for a while

* rework client modules
* hide main window when loading
* remake top menu functions
* rework modules autoload
* improve path resolving for otml and lua
* move core_widgets to core_lib
* fix tooltip issues
* split some styles
* add bit32 lua library
* fix assert issues
* fix compilation on linux 32 systems
* rework gcc compile options
* renable and fix some warnings
* remove unused constants
* speedup sprite cache
* move UIGame to lua (not funcional yet)
* fix a lot of issues in x11 window
* fix crash handler
* add some warnings do uiwidget
and much more...

modules/core_lib/ui/radiogroup.lua

@@ -0,0 +1,43 @@
+RadioGroup = newclass()
+
+function RadioGroup.create()
+  local radiogroup = RadioGroup.internalCreate()
+  radiogroup.widgets = {}
+  return radiogroup
+end
+
+function RadioGroup:destroy()
+  while #self.widgets ~= 0 do
+    self:removeWidget(self.widgets[1])
+  end
+end
+
+function RadioGroup:addWidget(widget)
+  table.insert(self.widgets, widget)
+  widget.onMousePress = function(widget) self:selectWidget(widget) end
+end
+
+function RadioGroup:removeWidget(widget)
+  if self.selectedWidget == widget then
+    self:selectWidget(nil)
+  end
+  widget.onMousePress = nil
+  table.removevalue(self.widgets, widget)
+end
+
+function RadioGroup:selectWidget(selectedWidget)
+  if selectedWidget == self.selectedWidget then return end
+
+  local previousSelectedWidget = self.selectedWidget
+  self.selectedWidget = selectedWidget
+
+  if previousSelectedWidget then
+    previousSelectedWidget:setChecked(false)
+  end
+
+  if selectedWidget then
+    selectedWidget:setChecked(true)
+  end
+
+  signalcall(self.onSelectionChange, self, selectedWidget, previousSelectedWidget)
+end