(svn r1350) Replace Vehicle GUI:
- Replaced "WP(w,replaceveh_d).line_height" with
"w->resize.step_height" since they needed to be the same anyway
- Cleaned the code a litte for readability (like correct tabbing)
- Added company color to replace vehicle windows to make them look like
the rest of the vehicle windows and made the caption text white (also to
fit the standard)

--This line, and those below, will be ignored--

M vehicle_gui.c
M lang/english.txt
M window.h

static const byte _dir_to_straight_trackdir[4] = {
	0, 1, 8, 9,
};

static const byte _reverse_dir[4] = {
//	3, 0, 1, 2
	2, 3, 0, 1
};