Floor dimension computations (mul/div). (#6264)

* floor most every dimension computations involving MUL or DIV
Should avoid passing nonsensical floating point coordinates/dimensions
to the UI code.

* Update base

* https://github.com/koreader/koreader-base/pull/1113
* https://github.com/koreader/koreader-base/pull/1114
* https://github.com/koreader/koreader-base/pull/1115

* Bump android-luajit-launcher

https://github.com/koreader/android-luajit-launcher/pull/230
https://github.com/koreader/android-luajit-launcher/pull/231

frontend/ui/widget/multiinputdialog.lua

@@ -42,7 +42,7 @@ function MultiInputDialog:init()
             input_type = field.input_type or "string",
             text_type =  field.text_type,
             face = self.input_face,
-            width = self.width * 0.9,
+            width = math.floor(self.width * 0.9),
             focused = k == 1 and true or false,
             scroll = false,
             parent = self,
@@ -68,7 +68,7 @@ function MultiInputDialog:init()
                 TextBoxWidget:new{
                     text = field.description,
                     face = Font:getFace("x_smallinfofont"),
-                    width = self.width * 0.9,
+                    width = math.floor(self.width * 0.9),
                 }
             }
             table.insert(VerticalGroupData, CenterContainer:new{