(svn r8394) -Cleanup: added an enum with widget names to the orders window

(svn r8393) -Fix

-Codechange: CheckCompatibleRail() is only called for tiles which are known to contain a piece of rail. Simplify the function accordingly by eliminating unnecessary checks.
-Fix (?): Also fix an inconsistency in deciding what a compatible rail type is between level crossings and other rail tiles. It is unknown if this caused any problems.

(svn r8392) -Fix

Use HASBIT() instead of implementing it manually

(svn r8391) -Codechange: Make normal/desert/rainforest detection for newgrf stations work

(svn r8390) -Codechange (r8384): Rewrote ResizeButtons()
Now it only works on first and last widget to resize
It now works with offsets correctly (no longer assumes the left is 0)
It's no longer needed to have a widget right of the ones you resize
Can handle any number of widgets

(svn r8385) -Fix

-Regression (r8314): I only did half the necessary changes to move railtype from Engine to RailVehicleInfo. Now do the rest.

(svn r8384) -Codechange: [GUI] instead of writing a resize button function for each window, a global ResizeButtons() is added

(svn r8383) -Feature: train detail window is now resizable horizontally (requested by Wolf01)

(svn r8382) -Fix (r8374): moved the include of stdint.h to the front of stdafx.h
This fixes the issue where OSX included stdint.h though other includes before defining __STDC_LIMIT_MACROS (and failed to compile because of this)

(svn r8381) -Fix (r8377): [build vehicle window] cleaned up the train refitable detection. It had two variables doing the same thing, but not always set to the same (oops)