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/old/game_interface/uiitem.lua

@@ -0,0 +1,75 @@
+function UIItem:onDragEnter(mousePos)
+  if self:isVirtual() then return false end
+
+  local item = self:getItem()
+  if not item then return false end
+
+  self:setBorderWidth(1)
+
+  self.parsed = false
+  self.currentDragThing = item
+  Mouse.setTargetCursor()
+  return true
+end
+
+function UIItem:onDragLeave(droppedWidget, mousePos)
+  if self:isVirtual() then return false end
+
+  if not self.parsed then
+    self.currentDragThing = nil
+  end
+
+  Mouse.restoreCursor()
+  self:setBorderWidth(0)
+  return true
+end
+
+function UIItem:onDrop(widget, mousePos)
+  if self:isVirtual() then return false end
+
+  if not widget or not widget.currentDragThing then return true end
+
+  local pos = self.position
+  local count = widget.currentDragThing:getCount()
+  if widget.currentDragThing:isStackable() and count > 1 then
+    widget.parsed = true
+    local moveWindow = displayUI('/game/movewindow.otui')
+    local spinbox = moveWindow:getChildById('spinbox')
+    spinbox:setMaximum(count)
+    spinbox:setMinimum(1)
+    spinbox:setCurrentIndex(count)
+
+    local okButton = moveWindow:getChildById('buttonOk')
+    okButton.onClick = function() g_game.move(widget.currentDragThing, pos, spinbox:getCurrentIndex()) okButton:getParent():destroy() widget.currentDragThing = nil end
+    moveWindow.onEnter = okButton.onClick
+  else
+    g_game.move(widget.currentDragThing, pos, 1)
+  end
+
+  self:setBorderWidth(0)
+  return true
+end
+
+function UIItem:onHoverChange(hovered)
+  if self:isVirtual() then return end
+
+  local draggingWidget = g_ui.getDraggingWidget()
+  if draggingWidget and self ~= draggingWidget then
+    local gotMap = draggingWidget:getClassName() == 'UIMap'
+    local gotItem = draggingWidget:getClassName() == 'UIItem' and not draggingWidget:isVirtual()
+    if hovered and (gotItem or gotMap) then
+      self:setBorderWidth(1)
+    else
+      self:setBorderWidth(0)
+    end
+  end
+end
+
+function UIItem:onMouseRelease(mousePosition, mouseButton)
+  if self:isVirtual() then return false end
+
+  local item = self:getItem()
+  if not item or not self:containsPoint(mousePosition) then return false end
+  return g_game.processMouseAction(mousePosition, mouseButton, nil, item, item, nil, item)
+end
+