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/widgets/uicombobox.lua

@@ -0,0 +1,69 @@
+UIComboBox = extends(UIWidget)
+
+function UIComboBox.create()
+  local combobox = UIComboBox.internalCreate()
+  combobox.m_options = {}
+  combobox.m_currentIndex = -1
+  return combobox
+end
+
+function UIComboBox:setCurrentOption(text)
+  if not self.m_options then return end
+  for i,v in ipairs(self.m_options) do
+    if v.text == text and self.m_currentIndex ~= i then
+      self.m_currentIndex = i
+      self:setText(text)
+      self:onOptionChange(text, v.data)
+      return
+    end
+  end
+end
+
+function UIComboBox:setCurrentIndex(index)
+  if index >= 1 and index <= #self.m_options then
+    local v = self.m_options[index]
+    self.m_currentIndex = index
+    self:setText(v.text)
+    self:onOptionChange(v.text, v.data)
+  end
+end
+
+function UIComboBox:addOption(text, data)
+  table.insert(self.m_options, { text = text, data = data })
+  local index = #self.m_options
+  if index == 1 then self:setCurrentOption(text) end
+  return index
+end
+
+function UIComboBox:onMousePress(mousePos, mouseButton)
+  local menu = createWidget(self:getStyleName() .. 'PopupMenu', self)
+  for i,v in ipairs(self.m_options) do
+    menu:addOption(v.text, function() self:setCurrentOption(v.text) end)
+  end
+  menu:setWidth(self:getWidth())
+  menu:display({ x = self:getX(), y = self:getY() + self:getHeight() })
+  connect(menu, { onDestroy = function() self:setOn(false) end })
+  self:setOn(true)
+  return true
+end
+
+function UIComboBox:onMouseWheel(mousePos, direction)
+  if direction == MouseWheelUp and self.m_currentIndex > 1 then
+    self:setCurrentIndex(self.m_currentIndex - 1)
+  elseif direction == MouseWheelDown and self.m_currentIndex < #self.m_options then
+    self:setCurrentIndex(self.m_currentIndex + 1)
+  end
+  return true
+end
+
+function UIComboBox:onStyleApply(styleName, styleNode)
+  if styleNode.options then
+    for k,option in pairs(styleNode.options) do
+      self:addOption(option)
+    end
+  end
+end
+
+function UIComboBox:onOptionChange(optionText, optionData)
+  -- nothing todo
+end